SOLUTION: 2x+8y=10 7x-8y=-73 solve by the elimination method

Question 548900: 2x+8y=10
7x-8y=-73
solve by the elimination method
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!
2x +8y = 10
7x -8y = -73
------------- add the two equations
9x = -63
x = -7
.
substitute x = -7 to find 'y'
.
2(-7) +8y = 10
8y = 10 + 14
y = 3
.
(-7,3)
.
substitute into the second equation to determine if this answer is correct
7(-7) -8(3) = -73 ??
-49 -24 = -73
Correct.
.
Done.
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