SOLUTION: solve the linear system using substitution 4x+3y=-5 x=y-3 please help fast I have a math exam tmr

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Question 1038120: solve the linear system using substitution
4x+3y=-5
x=y-3
please help fast I have a math exam tmr
Answer by tutor_paul(519) About Me  (Show Source):
You can put this solution on YOUR website!
Eqn #1: 4x+3y=-5
Eqn #2: x=y-3
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"Substitute" the value for x given in Eqn #2 into Eqn #1:
4x%2B3y=-5
4%28y-3%29%2B3y=-5
Solve for y:
4y-12%2B3y=-5
7y-12=-5
7y=7
highlight%28y=1%29
Now plug this result into Eqn. #2 to find x. I'll leave that part to you.
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Good Luck,
tutor_paul@yahoo.com