find x and y

1/2x+y=2

4x+7y=8

x=___________

y=___________

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find x and y

1/2x+y=2

4x+7y=8

x=___________

y=___________

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## Answers (1)

multiply 1/2x+y=2 by 8 (to get 4x)

4x+8y=16 ... 1

4x+7y=8 ... 2

1 subtract 2

y=8

substitute y=8 into 2

4x+7(8)=8

4x=- 48

x=- 12