7p=-21+4p

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Solution for 7p=-21+4p equation: 



7p=-21+4p

We move all terms to the left:

7p-(-21+4p)=0

We add all the numbers together, and all the variables

7p-(4p-21)=0

We get rid of parentheses

7p-4p+21=0

We add all the numbers together, and all the variables

3p+21=0

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

3p=-21

p=-21/3

p=-7

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