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

Tutors Answer Your Questions about Signed-numbers (FREE)

Question 73457: I am trying to go back to college after 18 years. I am struggling with math. Would you please show how this problem is worked? Solve and write the solution as an interval. 2-x
Click here to see answer by Alan3354(30935)

Question 154234: If "a" is a negative number find
/a/+a+/-2a/+/-a/
Click here to see answer by josmiceli(9645)

Question 154851: jocelyn wants to estimate the cost per ounce of a 9.8 ounce jar of gravy that costs $2.75.
what would be a good estimate?
explain how you make thsi estimate.
Click here to see answer by stanbon(57205)

Question 154903: -6.4-(-10.8)
Click here to see answer by stanbon(57205)

Question 155809: Find the error, then correct it. After driving 50 miles an hour for n hours the distance traveled was 50 n miles.
Click here to see answer by jojo14344(1512)

Question 156178: I'm not sure if this is the right section, but here it goes. It's been a long time since I have seen these problems and I am trying to work with my daughter on her homework. The problem is . I remember the order in which to solve issues, but not when to solve the in the equation.
Click here to see answer by Alan3354(30935)

Question 156623: Find the difference of the given terms:
-15a squared b squared - (-6a squared b squared)
Click here to see answer by stanbon(57205)

Question 157220: 2*5-6
Click here to see answer by checkley77(12569)

Question 157678: I don't have the math problem in the book. My teacher just gave it to me
3(n-1)=5n+3-2n
My answer is 4n=0
I don't think it's correct
Click here to see answer by Fombitz(13828)

Question 157701: -(7)--5x8
Click here to see answer by jim_thompson5910(28476)

Question 158734: 3x+4=10
Click here to see answer by SAT Math Tutor(36)

Question 157361: 8/9T = 64
what is the break down on solve the problem
Click here to see answer by jpena78(1)

Question 159473: Solve for A, A, R not = 0
A=(MX^3)/R
Click here to see answer by Alan3354(30935)

Question 160028: how do I solved this equation? 9.1x-5=8.1x

Click here to see answer by checkley77(12569)

Question 160377: I need help with these type of equations please,
-9h=-3(-3)
Click here to see answer by KnightOwlTutor(293)

Question 160829: Can you please solve this question for me: 50+(2*10)/4*2
Click here to see answer by gonzo(654)

Question 161311: Hiking up a mountain, you notice that the air temperature drops 10 degrees C for every 1,000 meters increase in elevation. Write a multiplication expression to represent the decrease in temperature if you hike up the mountain 3,000 meters. Then evaluate the expression and explain its meaning.

Thank you in advance for any help you can provide.
Click here to see answer by stanbon(57205)

Question 162218: what is the value of expressions?
15-3+2-9=?
16+4:2+9=?
Click here to see answer by stanbon(57205)

Question 162756: .12(y-6)+.06y=.08y-.07(10)
Click here to see answer by checkley77(12569)

Question 163529: 6 2/3 x 2 1/4=
Click here to see answer by vleith(2825)

Question 163531: -2 divided by (-1/2)=
Click here to see answer by checkley77(12569)

Question 164398: a[2a-4(2+a)]
Click here to see answer by midwood_trail(310)

Question 164758: I need you to show me how to do the work on this problem, so I can help my niece with the remainder of her homework. There is no example. So I would be using this as an example.
The problem reads:
x/2 + 1 + 3x/4 = -9
Click here to see answer by Mathtut(3670)

Question 164872: -20 + 2k = k - 4k
Click here to see answer by padmameesala(42)

Question 165648: I've tried this equation a few different ways, but I'm not coming up with the correct answer, please help.
[**The numbers beside the 't' are in subscript.][Note the dots are spacers to ensure the equation is in the correct format]

............KAT(t1 + t2)
If Q = -------------, solve for t
................d

Thank you.
Hope I'm posting in the right section.
Click here to see answer by Alan3354(30935)

Question 166295: For which integers a,b,c does a-b-c=a-(b-c)? justify your answer
Justify your answer.
Please help, I do not understand this question.
thank you so much
Click here to see answer by stanbon(57205)

Question 166547: this is an order of operation problem:
3x2÷6+2x3÷6
??????? =
3²+2²+1²
can you please help me on this problem i tried really hard but i cant seem to get it right.
Click here to see answer by stanbon(57205)

Question 167390: Dear Tutor,
I have a big proplem. I moved to Austia 2 years ago and i did not know german so i was not able to do the math. In school we are learning Pre algebra and i do not know a thing. if you can may you send me a couple of tipps and explainations to algebra
Thank you!
Click here to see answer by nerdybill(6948)

Question 168343: not sure what kind of math it is, as I have never done it before, I am helping my grand daughter with her math home work. The question is -17-(-25).
Thank you Sue
Click here to see answer by Fombitz(13828)

Question 169394: how do you write 5 less a number = 75
Click here to see answer by Fombitz(13828)

Question 170930: my son has some homeworks that says:
write down two more facts that are implied by each of the following
a 4+7=11 b d+f=8 c 4x5=20 d xy=18
What does implied mean?
Click here to see answer by stanbon(57205)

Question 172088: My son has a problem i dont understand . Can you please help me to understand to give me a clear thought on how to help him {{3n = 21}}
then it ask 1.What does the n means?
Click here to see answer by Alan3354(30935)

Question 172731: simplify
-11-4
Click here to see answer by stanbon(57205)

Question 172826: Joe has a collection of nickles and dimes that is worth, $7.05. If the # of dimes were doubled, and the # of nicles were increased by eight, the value of the coins would be, $11.75. How many dimes does he have?
It really helps me to understand if I can See each step to solve this problem written out like in a math book. Thank you
Click here to see answer by checkley77(12569)

Question 172825: Solve by elimination: x+7y=30, 9x+6y=99
It really helps me to understand if I can See each step to solve this problem written out like in a math book. Thank you
Click here to see answer by Mathtut(3670)

Question 172812: Factor completely: x^2+3xy-18y^2
This is a study problem for an Accuplacer test that I'm taking tomorrow, It really helps me to understand if I can See each step to solve this problem written out like in a math book. Thank you.
Click here to see answer by checkley77(12569)

Question 163528: 6x(-16)x(-4)x0
Click here to see answer by checkley77(12569)

Question 172819: Divide and if possible simplify: (5p-5/p)/(6p-6/5p^2)
I know that i have to flip the second fraction and multiply, but I'm not seeing how to get the right answer.This is a study problem for an Accuplacer test that I'm taking tomorrow, It really helps me to understand if I can See each step to solve this problem written out like in a math book. Thank you.
Click here to see answer by ankor@dixie-net.com(15622)

Question 175974: ummm i need help with a problem.
what is 2 x 2 + 172 equal?
Click here to see answer by nena9557(1)

Question 176096: x+7/8=2
Click here to see answer by Mathtut(3670)

Question 176147: Explain why -x could be positive.
Click here to see answer by Alan3354(30935)

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