Asked by Tykechia
Solve the elimination method.
4x-9y=18.5
7y-2x=10.5
4x-9y=18.5
7y-2x=10.5
Answers
Answered by
Damon
multiply first one by 7 and second one by 4
28 x - 63 y = 129.5
28 x - 8 y = 42
-------------------- subtract
-55 y = 87.5
y = - 1.591
then go back to get x
28 x - 63 y = 129.5
28 x - 8 y = 42
-------------------- subtract
-55 y = 87.5
y = - 1.591
then go back to get x
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