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

User Barry NL
by
7.7k points

1 Answer

4 votes
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

User Varun Rao
by
8.3k points

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