-90=-5(4+2p)

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Solution for -90=-5(4+2p) equation: 



-90=-5(4+2p)

We move all terms to the left:

-90-(-5(4+2p))=0

We add all the numbers together, and all the variables

-(-5(2p+4))-90=0



We calculate terms in parentheses: -(-5(2p+4)), so:

-5(2p+4)

We multiply parentheses

-10p-20

Back to the equation:

-(-10p-20)



We get rid of parentheses

10p+20-90=0

We add all the numbers together, and all the variables

10p-70=0

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

10p=70

p=70/10

p=7

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