imfailingmathhelp imfailingmathhelp

25-04-2017
Mathematics

contestada

Solve the system using substitution and describe your steps.
x=y-3
2x+y=12

Respuesta :

melstrah melstrah

25-04-2017

First you plug in for x,

2(y-3)+y=12

Then you solve for y
2y-5+y=12
-10y+y=12
-9y=12
-9y/9=12/-9
y=-1.333333333333333333333333333333333333333333333333333333333

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