Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

Tutors Answer Your Questions about expressions (FREE)

Question 331588: The algebraic steps below describe a number trick. Describe it in words.
1. x
2. x + 7
3. 2(x+7) = 2x + 14
4. 2x +14 - 4 = 2x + 10 = 2(x +5)
5. 2(x+5)/2 = x + 5
6. x +5 - x = 5
Click here to see answer by solver91311(24713)

Question 331791: Evaluate (2/3)^-2
Click here to see answer by checkley77(12844)

Question 331909: can you please explain this? 58-2 [30-(7+5)]
Click here to see answer by mananth(16946)

Question 332304: How do you write an algebra expression? Example: The number of days in 4 weeks
Click here to see answer by solver91311(24713)

Question 332458: tia wrote 20+7x to find how much she earned for on pet sitting job and 15x for another job. explain the difference between the expressions
Click here to see answer by mananth(16946)

Question 332504: If 4 less than 3 times a certain number is 2 more than the number, what is the number?
Click here to see answer by AAfter.Com(18)

Question 332638: [(-2x to 5th power y to the 2nd power) 2nd power] 3rd power
Click here to see answer by benazir.sj@gmail.com(109)

Question 332746: please help me solve 4x+3=7 please show the steps
Click here to see answer by vleith(2983)

Question 332747: (x-y)+(2x-3y)=3x-4y please show steps
Click here to see answer by AAfter Search(61)

Question 332793: 3x+4= 5x-6 please help solve
Click here to see answer by Jstrasner(112)

Question 332873: multiply

I am not sure how to go about doing this problem, what is it that I would multiply?
thanks for your help
Click here to see answer by solver91311(24713)

Question 332893: Divide
divide

I do not know what i need to do coud someone please help me
thank you in advance
Click here to see answer by solver91311(24713)

Question 332895: solve by factoring and using the principle of zero products

Click here to see answer by solver91311(24713)

Question 332894: Factor completely. if the polynomial is prime, state this

Click here to see answer by nerdybill(7384)

Question 332912: factor completely.if polynomial is prime state it.

Click here to see answer by solver91311(24713)

Question 333014: Find three ordered pairs that satisfy the equation.
y = -3x + 5
Click here to see answer by vleith(2983)

Question 333013: Find three ordered pairs that satisfy the equation.
y = 2x - 1

Click here to see answer by AAfter.Com(18)

Question 333012: Find three ordered pairs that satisfy the equation.
y = x + 7

Click here to see answer by AAfter.Com(18)

Question 333010: The first step in solving x + 10 = 4 is to subtract 4 from both sides.
Click here to see answer by Alan3354(69443)

Question 333047: (2c + 3d)(7c - 2d)
How is this solved? I am a returning college student x20 years since I last went to college and I have forgot everything to do with math. I know this is probably so simple - I just need to remember the steps. could you refresh me on this one?
Click here to see answer by nerdybill(7384)

Question 333036: 10t^3+10
FIRST YOU WOULD FIND OUT WHAT THESE TWO NUMBERS HAVE IN COMMON
THEY BOTH HAVE 10 IN COMMON
SO THE ANSWER WOULD BE
10(T^3+1)
YOU CAN CHECK YOUR ANSWER BY USING THE DISTRIBUTIVE PROPERTY
10*T^3=10T^3
10*1=10
10T^3+10
Click here to see answer by apachemexican1(64)

Question 333203: I really need help with this please. I am returning to school after many years and I don't know where to start with this problem. If you could please show me how to do this type of problem it would be a big help. Thank you.
Simplify: 4a-{6b-2[2a-(3-b)]}

I know the basic PEMDAS rules but the brackets and 3-b are confusing me.
Click here to see answer by rfer(16322)

Question 333205: r(s), for r = 109 and s = 33
Click here to see answer by checkley77(12844)

Question 333246: 17) Half the sum of m and 5
Click here to see answer by solver91311(24713)

Question 333845: Find the value of 2^-3-2^0
Click here to see answer by jim_thompson5910(35256)

Question 333841: Solve: 3> 4+u/-5
Click here to see answer by rfer(16322)

Question 333843: Simplify completely: x^2+5x+4/x+1

Click here to see answer by jim_thompson5910(35256)

Question 333933: 2*3^3+4
insert grouping symbols in the expression to produce the indicated value (62,220,4374)
we have found two of the three
2(3^3+4) = 62
(2*3)^3+4 = 220
we need to find out the equation for answer = 4374
Click here to see answer by scott8148(6628)

Question 334327: The question is, "insert grouping symbols to make each statement true".
the problem is 12-2(squqared)(divided by 5=20
Click here to see answer by rfer(16322)

Question 334367: if you had 2[4(9-7)+1] what would be the answer
Click here to see answer by tinbar(133)

Question 334434: -1/3[-9+10(3)] I do not know the value of this expression?
Click here to see answer by stanbon(75887)

Question 334434: -1/3[-9+10(3)] I do not know the value of this expression?
Click here to see answer by mananth(16946)

Question 334439: Change the given forms into the missing form:
Fraction Decimal Percent
3/4 0.75 ? %

Click here to see answer by jim_thompson5910(35256)

Question 334608: twice the sum of k and 4
Click here to see answer by nyc_function(2741)

Question 334621: what is the evaluation of y+15-c+12-x if x=7, y=10, and c=8?
Click here to see answer by solver91311(24713)

Question 334677: Economic lot size model. d=daily demand rates, p=daily production rate, t=number of days for a production run. The book saids that max. inventory is (p-d)t . t=q/p days. Thus maximum inventory = (p-d)t =(p-d( (q/p)= (1-d/p)q. Please help me make some sense out of these equations. Thank you.
Click here to see answer by stanbon(75887)

Question 334726: a2+b2-2ab for a=5 and b=8
Click here to see answer by nyc_function(2741)

Question 334720: 4(95-8x)=x-115
Click here to see answer by mananth(16946)

Question 334827:
Click here to see answer by Edwin McCravy(20060)

Question 335005: 6/5 to the 3rd power how do i solve this?
Click here to see answer by stanbon(75887)

Question 335005: 6/5 to the 3rd power how do i solve this?
Click here to see answer by rfer(16322)

Question 335005: 6/5 to the 3rd power how do i solve this?
Click here to see answer by Alan3354(69443)

Question 335065: Remove parentheses and simplify
2p+3q-6(2p-8q+7r)=
Click here to see answer by rfer(16322)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840