Solve for p
p=-40.5
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-10.9+0.5p-0.9p=5.3
Subtract 0.9p from both sides.
-10.9-0.4p=5.3
Combine 0.5p and -0.9p to get -0.4p.
-0.4p=5.3+10.9
Add 10.9 to both sides.
-0.4p=16.2
Add 5.3 and 10.9 to get 16.2.
p=\frac{16.2}{-0.4}
Divide both sides by -0.4.
p=\frac{162}{-4}
Expand \frac{16.2}{-0.4} by multiplying both numerator and the denominator by 10.
p=-\frac{81}{2}
Reduce the fraction \frac{162}{-4} to lowest terms by extracting and canceling out 2.
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