7(-3p+1)=21

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



7(-3p+1)=21

We move all terms to the left:

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

We multiply parentheses

-21p+7-21=0

We add all the numbers together, and all the variables

-21p-14=0

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

-21p=14

p=14/-21

p=-2/3

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