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\left(p+6\right)\left(p+5\right)=\left(p-4\right)p
Variable p cannot be equal to any of the values -6,4 since division by zero is not defined. Multiply both sides of the equation by \left(p-4\right)\left(p+6\right), the least common multiple of p-4,p+6.
p^{2}+11p+30=\left(p-4\right)p
Use the distributive property to multiply p+6 by p+5 and combine like terms.
p^{2}+11p+30=p^{2}-4p
Use the distributive property to multiply p-4 by p.
p^{2}+11p+30-p^{2}=-4p
Subtract p^{2} from both sides.
11p+30=-4p
Combine p^{2} and -p^{2} to get 0.
11p+30+4p=0
Add 4p to both sides.
15p+30=0
Combine 11p and 4p to get 15p.
15p=-30
Subtract 30 from both sides. Anything subtracted from zero gives its negation.
p=\frac{-30}{15}
Divide both sides by 15.
p=-2
Divide -30 by 15 to get -2.