SOLUTION: I'm having a lot of trouble solving this equation using the substitution method please help. 4x-3y=2 5x+y=-7 Here is what I've tried. I solved for y in the 2nd equation and

Question 882873: I'm having a lot of trouble solving this equation using the substitution method please help.
4x-3y=2
5x+y=-7
Here is what I've tried. I solved for y in the 2nd equation and plugged it into the 1st equation, combined like terms, simplified and now I'm stuck
y=5x-7
4x-3(5x-7)=2
4x-15x+21=2
-11x+21=2
what is my next move

Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
All of this is wrong because the first step is wrong, because of sign mistake.

Starting fresh from the second equation,

, different formula for y than before. You will use this formula again later...
-
Now, use the first equation of your system and substitute for y to find x.

Use what you found for x to compute the value for y.
RELATED QUESTIONS
I am having trouble solving this equation its so simple but i cant remember please help. (answered by checkley71)

I am having lots of trouble answering this equation. Solve by substitution method:... (answered by Earlsdon)

This chap is asking to solve the system of equation using subsititution method but I keep (answered by checkley71,Earlsdon)

I am having trouble solving this system using the substitution method. 2x + y =... (answered by scott8148)

hi, can you please help me on solving systems using substation this is a problem I am... (answered by amarjeeth123)

I am having a lot of trouble solving this problem. It involves factoring. Here it is:... (answered by AnlytcPhil)

I having a lot of trouble figuring out how to do this problem, + solve the system of... (answered by algebrahouse.com)

I am having trouble with solving by substitution. Please help. 5x-2y=-5... (answered by praseenakos@yahoo.com)

I need help solving this equation using the substitution method. Can you please answer it (answered by mananth)