y = 3x + 20
x + y = 180
Substitute
x + 3x + 20 = 180
4x = 160
You finish it from here.
Jared P.
asked 03/06/19y = 3x + 20
x + y = 180
Substitute
x + 3x + 20 = 180
4x = 160
You finish it from here.
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