SOLUTION: 12x+-7y=22 -4x+y=10

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Question 873911: 12x+-7y=22
-4x+y=10
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.12x-7y=22
2.-4x%2By=10
Multiply eq. 2 by 3 and add to eq. 1,
12x-7y-12x%2B3y=22%2B30
-4y=52
y=-13
Then use either equation to solve for x,
-4x-13=10
-4x=23
x=-23%2F4