Solve for p
p = -\frac{15}{7} = -2\frac{1}{7} \approx -2.142857143
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7p-49-28p=-4
Subtract 28p from both sides.
-21p-49=-4
Combine 7p and -28p to get -21p.
-21p=-4+49
Add 49 to both sides.
-21p=45
Add -4 and 49 to get 45.
p=\frac{45}{-21}
Divide both sides by -21.
p=-\frac{15}{7}
Reduce the fraction \frac{45}{-21} to lowest terms by extracting and canceling out 3.
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