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\left(p-2\right)\left(p+1\right)=\left(p-5\right)\left(p+3\right)
Variable p cannot be equal to any of the values 2,5 since division by zero is not defined. Multiply both sides of the equation by \left(p-5\right)\left(p-2\right), the least common multiple of p-5,p-2.
p^{2}-p-2=\left(p-5\right)\left(p+3\right)
Use the distributive property to multiply p-2 by p+1 and combine like terms.
p^{2}-p-2=p^{2}-2p-15
Use the distributive property to multiply p-5 by p+3 and combine like terms.
p^{2}-p-2-p^{2}=-2p-15
Subtract p^{2} from both sides.
-p-2=-2p-15
Combine p^{2} and -p^{2} to get 0.
-p-2+2p=-15
Add 2p to both sides.
p-2=-15
Combine -p and 2p to get p.
p=-15+2
Add 2 to both sides.
p=-13
Add -15 and 2 to get -13.