21=4p-5

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Solution for 21=4p-5 equation: 



21=4p-5

We move all terms to the left:

21-(4p-5)=0

We get rid of parentheses

-4p+5+21=0

We add all the numbers together, and all the variables

-4p+26=0

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

-4p=-26

p=-26/-4

p=6+1/2

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