15=7+2p

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Solution for 15=7+2p equation: 



15=7+2p

We move all terms to the left:

15-(7+2p)=0

We add all the numbers together, and all the variables

-(2p+7)+15=0

We get rid of parentheses

-2p-7+15=0

We add all the numbers together, and all the variables

-2p+8=0

We move all terms containing p to the left, all other terms to the right

-2p=-8

p=-8/-2

p=+4

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