marcosolis773 marcosolis773

23-02-2017
Mathematics

contestada

Solve equation by the addition method

X+3y=15,-8x+3y=-12

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dblackja68 dblackja68

23-02-2017

x+3y=15
x=15
3y=15
3y/3=15/3
x=5
-8x+3y=-12
-8x=-12
-8x/-8=-12/-8
x=12/8 or 3/2
3y=-12
3y/3=-12/3
y=-4
i'm not sure if that it

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