-7=-2(p+1)+1

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Solution for -7=-2(p+1)+1 equation: 



-7=-2(p+1)+1

We move all terms to the left:

-7-(-2(p+1)+1)=0



We calculate terms in parentheses: -(-2(p+1)+1), so:

-2(p+1)+1

We multiply parentheses

-2p-2+1

We add all the numbers together, and all the variables

-2p-1

Back to the equation:

-(-2p-1)



We get rid of parentheses

2p+1-7=0

We add all the numbers together, and all the variables

2p-6=0

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

2p=6

p=6/2

p=3

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