SOLUTION: 7x+2y=10 -7x+y=-16

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Question 275889: 7x+2y=10
-7x+y=-16
Answer by mathjames(8) About Me  (Show Source):
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7x+2y=10
-7x+y=-16
3y=-6
3y/3=-6/3
y=-2
7x+2y=10
-7x+y=-16 multiply second equation by -2 to eliminate y
7x+2y=10
14x-2y=-20
21x=-10
21x/21=-10/21
x=-10/21