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25-04-2018
Mathematics

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what is the first step in solving, 3x - 12y=5 3y -x=9, using the elimination method

Respuesta :

25-04-2018

3x-12y = 5
-x+3y = 9

First step is to make the coefficient of either x or y same.

3x-12y = 5
(-x+3y = 9)3

3x-12y = 5
-3x+9y = 27

-4y = 32
y = -8

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