Solve for p
p=\frac{5}{7}\approx 0.714285714
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12p-4+9p=11
Add 9p to both sides.
21p-4=11
Combine 12p and 9p to get 21p.
21p=11+4
Add 4 to both sides.
21p=15
Add 11 and 4 to get 15.
p=\frac{15}{21}
Divide both sides by 21.
p=\frac{5}{7}
Reduce the fraction \frac{15}{21} to lowest terms by extracting and canceling out 3.
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