3(p-7)=21

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



3(p-7)=21

We move all terms to the left:

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

We multiply parentheses

3p-21-21=0

We add all the numbers together, and all the variables

3p-42=0

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

3p=42

p=42/3

p=14

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