Asked by Rosa

Solve and check x+y=12;y=3x
x+y=12;y=3x
x+3x=12
4x=12
4x/4=12/4
x=3
y=3x
y=(3)(3)
y=9

8 years ago

Answered by Steve

so, did you check?

3+9=12

so, ok.

8 years ago

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