Solve for p
p=-\frac{q}{4}+30
Solve for q
q=120-4p
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4p+q=180-60
Subtract 60 from both sides.
4p+q=120
Subtract 60 from 180 to get 120.
4p=120-q
Subtract q from both sides.
\frac{4p}{4}=\frac{120-q}{4}
Divide both sides by 4.
p=\frac{120-q}{4}
Dividing by 4 undoes the multiplication by 4.
p=-\frac{q}{4}+30
Divide 120-q by 4.
4p+q=180-60
Subtract 60 from both sides.
4p+q=120
Subtract 60 from 180 to get 120.
q=120-4p
Subtract 4p from both sides.
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