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24-03-2017
Mathematics

contestada

Solve using elimination.

9x + 4y = -6

-7x + y = -20

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Firefox37719 Firefox37719

30-06-2017

9x+4y=-6
4(-7x+y=-20)

9x+4y=-6
-(-28x+4y=-80)

37x=74

x=74/37

x=2

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