SOLUTION: Solve the system using any algebraic method:
7x+5y=-12
3x-4y=1
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Question 105005This question is from textbook McDougal Littell Algebra 2
: Solve the system using any algebraic method:
7x+5y=-12
3x-4y=1
This question is from textbook McDougal Littell Algebra 2
Answer by elima(1433) (Show Source): You can put this solution on YOUR website!
7x+5y=-12
3x-4y=1
===============
We will go ahead and use elimination;
Multiply first equation by 4;
28x+20y=-48
========================
Now the second equation by 5;
15x-20y=5
====================
now add each together;
28x+20y=-48
15x-20y=5
--------------
43x=-43
x=-1
Now plug that answer into either original equation forx;
3(-1)-4y=1
-3-4y=1
-4y=4
y=-1
answer; x=-1, y=-1
:)
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