SOLUTION: 2x- y=15 2x+3y=-13

Question 548839: 2x- y=15
2x+3y=-13
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
2x -y =15
2x +3y = -13
--------------- subtract
-4y = 28
.
y = -7
.
Substitute y = -7 into one of the equations to find x.
.
2x -(-7) = 15
2x +7 = 15
2x = 8
x = 4
.
Check the solution (4,-7) by substituting in the other equation.
2*4 +(3*-7) = 8 -21 = -13
Correct.
.
Done.
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