-21+7(1+3p)=70

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Solution for -21+7(1+3p)=70 equation: 



-21+7(1+3p)=70

We move all terms to the left:

-21+7(1+3p)-(70)=0

We add all the numbers together, and all the variables

7(3p+1)-21-70=0

We add all the numbers together, and all the variables

7(3p+1)-91=0

We multiply parentheses

21p+7-91=0

We add all the numbers together, and all the variables

21p-84=0

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

21p=84

p=84/21

p=4

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