# Algebra

Can someone please help me with these algebra problems?

The directions are: Solve the equation or formula for the indicated variable.

m=ax+bx for x
8=mx+ax-2 for x
ax+bx-3=4 for x

Anything is helpful! Thanks.

For m=ax+bx for x you would use the distributive property to get
m=(a+b)x now divide both sides by (a+b) with the requirement that (a+b) is not 0.
For 8=mx+ax-2 for x, now add 2 to both sides, use the distributive property as above, and find x. Be sure to test the answer in the original equation.
For ax+bx-3=4 for x add 3 to both sides and use the distributive property as above. Be sure to show your work too.

Thank-you very much. Do you know if there are any restrictions/requirements in the two last answers? I think there are.

Yes, the same as the first. Anytime we have an equation and divide both sides by some quantity we should mention that that quantitiy must be non-zero. We should say this at least once in our solution, but sometimes our equation is such that all the values cannot be zero. In that case we can omit this statement.

Thanks again :)

I got

m/a+b=X
10/a+m=x
7/a+b+x all with the restrictions

Does that seem right?

m=ax+bx for x
8=mx+ax-2 for x
ax+bx-3=4 for x
Yes, that looks right. About the only thing I might suggest is that you use parentheses like this (a+b) for the denominators so it doesn't cause confusion. The requirement that a+b or a+m be non-zero could be written to the right of the equation. As I mentioned, if all of the variables were positive numbers say, then these restrictions could be ignored.

How do you combine like terms like in the problem (3m+5k)-(2m+10k)?

Use the associative and distributive properties to get
(3m+5k)-(2m+10k) = 3m+5k - 2m -10k =
(3m-2m) + (5k-10k) = m-5k
You should post this as a new question too. This is easy to miss after it's off page 1.

1. 👍 0
2. 👎 1
3. 👁 126
1. what is r +12 help me you are no help

1. 👍 0
2. 👎 0

## Similar Questions

1. ### bobpursly,.math

Ok, assume it equals zero. 2x + 3y -6=0 subtract 3y from each side. add six to each side. divide both sides by two. its how its in the book i'm suppost to solve for x. but how? How do I solve for the following: Directions solve

asked by bobpursley on December 19, 2006
2. ### math,algebra

How do you solve these types of math problems. Directions: Solve each literal equation for the indicated variable. A=1/2h(B+b) (For b) Area of a trapezoid It is just a matter of algebraic manipulation. A=(1/2)h(B+b) Multiply both

asked by jasmine20 on December 18, 2006
3. ### algebra

solve by substitution 5x-2y = -5 y - 5x = 3 could someone take a min a show me how to do this problem by steps so i can do the rest of my problems and wait a min so i may ask questions. I m failing my algebra class and desparately

asked by Tammy Evert on August 10, 2006
4. ### Algebra

Hello. It's the beginning of the school year, and I've quite forgotten what I learned in Pre-Algebra...The question in the text book is this : Simplify each pair of expressions. 1. 36 - 8 ÷ 2 (36 - 8) ÷ 2 There are several

asked by Eve on August 31, 2008
5. ### DRWLS,MATH,ALGEBRA

Drawls, How did you get 2h. and then the 2a/h from.Can you help me understand it when you get a chance. Directions: Solve each literal equation for the indicated variable. A=1/2h(B+b) (For b) Area of a trapezoid For Further

asked by jasmine20 on December 18, 2006
6. ### math, correction plz

Can someone correct these for me.PLZ Problem#1 Directions solve equation ãx+4 = 3 My answer: x = 5 Probelm #2 Directions solve equation ã(4x+1) + 3 = 0 My answer x = 2 Problem #3 Directions solve equation ã(2y+7)+4=y My

asked by jas20 on March 24, 2007
7. ### algebra 2

I'm stuck on this one problem. The directions say: Solve the following leaving the sq. rt. in it's simplest form: sq.rt of 33+ sq.rt of 96 - sq.rt of 3 = I think it can't be simplifed---am I correct? (the directions did say that

asked by dan on August 14, 2010
8. ### algebra

How can I find the Domain and Range for y=1/-x -2 And y=-4/x-4 +4 they also ask me to compare these 2 problems with graph of y=1/x please help me solve these algebra problems.

asked by smantha on February 23, 2015
9. ### Algebra II

Evaluate: ƒ(2) + 5 It says to use this graph to solve the equation: h t t p://i55 . t i n y p i c . com/2qdvfur.jpg Right now we're on Algebra and Composition with Functions. I have no idea what I'm supposed to do, and there are

asked by Matt on September 18, 2011
10. ### math

algebra is used to solve problems of age, speed,unknown numbers. What are other parts of word problems you know atleast 12 ?

asked by kevi on March 15, 2019

More Similar Questions