Solve for P
P=13.38
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1.4-10P-20P=-400
Subtract 20P from both sides.
1.4-30P=-400
Combine -10P and -20P to get -30P.
-30P=-400-1.4
Subtract 1.4 from both sides.
-30P=-401.4
Subtract 1.4 from -400 to get -401.4.
P=\frac{-401.4}{-30}
Divide both sides by -30.
P=\frac{-4014}{-300}
Expand \frac{-401.4}{-30} by multiplying both numerator and the denominator by 10.
P=\frac{669}{50}
Reduce the fraction \frac{-4014}{-300} to lowest terms by extracting and canceling out -6.
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