Questions on Algebra: Operations with Signed Numbers answered by real tutors!

Tutors Answer Your Questions about Signed-numbers (FREE)

Question 216813: 3x+15 over 5 is equal to 2x-1 solve for x
Click here to see answer by MathTherapy(1423)

Question 218303: 1. we have learned that the associative property does not hold for subtraction.
That is, in general,
(a - b) - c ≠ a - (b - c).
Your task is to:
a. find distinct ingtegers a,b,c such that (a - b) - c = a - (b - c).
b. PROVE that your integers work by substituting and simplifying the equation.
Click here to see answer by solver91311(16885)

Question 218306: The number midway between -6 and 2 is ________?
I'm not confident that I know how to solve this the right way, please help if you can.
Thank you!
Click here to see answer by RAY100(1637)

Question 218372: One of the wrenches has a measurement of 7/16” and the other has a size of 3/8”. Which one is larger?
Click here to see answer by jim_thompson5910(28595)

Question 219553: (10)(-9)(8)(-7)(6)(-5)0
If I try to solve this the way I think it should be the answer comes out as 0 and I'm not sure if thats correct and if I'm doing it the right way. Please help if you can, thank you.
Click here to see answer by jim_thompson5910(28595)

Question 219564: Simplify:
I'm lost when it comes to this problem, I just dont understand how I should simplify it.
Click here to see answer by jim_thompson5910(28595)

Question 219574:
I'm not sure how they excpect me to divide by zero, would the answer simpliy be zero?
Please help, and thank you.
Click here to see answer by jim_thompson5910(28595)

Question 219574:
I'm not sure how they excpect me to divide by zero, would the answer simpliy be zero?
Please help, and thank you.
Click here to see answer by jsmallt9(3296)

Question 219906: Hi, my names Marlene and I am having trouble with this problem in Pre-Algebra. It is order of operations just looking at it confuses me. Here it is...
(100-85)x5+81/9x2-3(72-60)/4-(11+5)+5x9/3=
Click here to see answer by rfer(12657)

Question 220214: Okay. Heres a question I absolutely do NOT get.
If a certain number is decreased by 8 and that difference is multiplied by 8, the result is equal to the result obtained if the number is decreased by 6 and that difference is multiplied by 6. Find the numbers.
In my opinion this is a make-believe question :(
Help please.
Click here to see answer by solver91311(16885)

Question 220889: What is (x+5y) + (x-y)
Click here to see answer by edjones(7569)

Question 221897: -1.2(-1.09)
I tried to solve this but I just keep getting messed up. So if someone could help me with this, that would be awesome! Thanks
Click here to see answer by Alan3354(30993)

Question 221898: -1.56 - -3.2
I'm having trouble with this problem, please help. Thanks
Click here to see answer by likaaka(51)

Question 222350: okay I have a order of operations number question and I have to simplify. It's
I need a step by step on how to do this, please
Click here to see answer by Edwin McCravy(8909)

Question 223558: For order of operations, what is the correct way to solve this problem? The answer key says 9, but I get 33. What is the correct way to do this problem and why?
36 ÷ 4(5-2)+ 6
Click here to see answer by drj(1380)

Question 223844: so i have this test tomorrow and i do not understand how to determine what r equals.PLEASE HELP ME!
so the question says determine the value of r so that the line passes through each pair of points has the given slope.
(r,4)(7,1)with m=3/4.
step by step how do i solve this??
Click here to see answer by rfer(12657)

Question 225305: what is: 3x+10=2x-5
Click here to see answer by LtAurora(115)

Question 226662: Please help me solve this equation: 14=16t^2+12t
Click here to see answer by drj(1380)

Question 227211: I'm in the 6th grade.My question is:Integer rules when the signs are different you are supposed to subtract,are they talking about the signs in paranthes
EX is (+9)+(-8)= the two signs are different so do i just subtract both now,because the signs in parantheses are different
Click here to see answer by Theo(3464)

Question 228470: How do you right 5m in two word phrases?
Click here to see answer by rapaljer(4667)

Question 229313: how do i solve 1/2v= -1/2v + 3/8
Click here to see answer by shymeerab(21)

Question 229793: what is the algebraic expression for three fourths the square of b
Click here to see answer by Alan3354(30993)

Question 229883: HI, my name is Donesha. I want to ask a simple question about negative an positive numbers.
So say,
What would these equal:
(+)+(+)=
(+)-(+)=
(+)*(+)=
(+)/(+)=
(-)+(-)=
(-)-(-)=
(-)*(-)=
(-)/(-)=
Click here to see answer by stanbon(57342)

Question 230479: How do I get my answer to equal 1 when the only numbers I have to use are 10,9,8,6,5. I can multiply,divide,subtract,and add. I have tried all the adding and subtracting ways. I have also tried getting the numbers to go negative so I can get it up to one.
Click here to see answer by stanbon(57342)

Question 231716: i need help with my homework

Click here to see answer by bamaboy(14)

Question 232639: tell whether the given value of the variable is a solution of the equation -5r=125;r=-15
Click here to see answer by Alan3354(30993)

Question 232911: can you help me solve this -14
-23
Click here to see answer by rfer(12657)

Question 234403: I have a question regarding order of operations:
how do i solve this problem:
59-35/7*4+53
Click here to see answer by kennysmom(1)

Question 236975: Hello, I can't figure out these 2 problems using Pemdas. Use each operation only once per problem (addition, subtraction, division and multiplication).Thank you!!!
12___6___4___2=24
12___6___4___2=14
Click here to see answer by RAY100(1637)

Question 237225: may i know what is the corrrect process for solving this problem?
the question is:
20/(3(2x-8)-(-56)/7)
thank you so much.
Click here to see answer by rapaljer(4667)

Question 238846: what is 6mt + t can it be simplified
and
2w-(5w-a)+6a
Click here to see answer by unlockmath(1599)

Question 239084: how do i get 24 using the numbers 9,8,7, and 6 and i have to use addition, subtraction, multiplication, and division just once
Click here to see answer by checkley77(12569)

Question 239444: I have a question regarding this solved problem on the site -
Answer by jim_thompson5910(13774)
The question was Combine like terms 5w - 6w and the answer said, 5w - 6w = -1w which also looks like 5w - 6w = -w.
Why do you remove the 1? How do you know when to do that? My daughter and I are confused about this.
thank you - karen gass
Click here to see answer by solver91311(16885)

Question 239832: what is the difference?
-5^2 - I thought the answer is 25
(-5)^2 - I thought the answer is 25
-(5)^2 - I thought the answer is -25

Click here to see answer by checkley77(12569)

Question 239973: how do you get 24 using onlt three operations with the numbers 8 8 6 1 using the numbers only once
Click here to see answer by Edwin McCravy(8909)

Question 240499: determine the value of "r" so that the line passes through each pair of points at the given slope.
(7,-5), (6,r),m=0
Please Help !
Click here to see answer by jim_thompson5910(28595)

Question 240530: -8(x-3) +12x= 15-(2x +3)

answer: -2 (anyone can show me why the answer is -2 and can give a full break down thank you).
Click here to see answer by solver91311(16885)

Question 240530: -8(x-3) +12x= 15-(2x +3)

answer: -2 (anyone can show me why the answer is -2 and can give a full break down thank you).
Click here to see answer by scott8148(6628)

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