3(7+5p)=8p-21

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Solution for 3(7+5p)=8p-21 equation: 



3(7+5p)=8p-21

We move all terms to the left:

3(7+5p)-(8p-21)=0

We add all the numbers together, and all the variables

3(5p+7)-(8p-21)=0

We multiply parentheses

15p-(8p-21)+21=0

We get rid of parentheses

15p-8p+21+21=0

We add all the numbers together, and all the variables

7p+42=0

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

7p=-42

p=-42/7

p=-6

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