tuutseyoo tuutseyoo

26-01-2018
Mathematics

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solve using addition method. 3x - 7y = 16
5x -7y = 36

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jackyang0325p2z5fu jackyang0325p2z5fu

26-01-2018

Subtracting is the same as adding, so by subtracting the equations, you get 2x=20, x=10, y: 30-7y=16, 7y=14, y=2, answer:(10,2)

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