Solve 2x -y =4 5x -2.5y =10

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asked Jan 28, 2015 108k views

1 Answer

Jzwiener · Answer 1 · 2015-02-03T18:16:14+0000

2x-y=4

Therefore: y=2x-4

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5x-10/4(2x-4)=10

5x-5/2(2x-4)=10

5x-5x+10=10

10=10

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*Problem can't be solved.

Solve 2x -y =4 5x -2.5y =10

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