89=21+2p

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Solution for 89=21+2p equation: 



89=21+2p

We move all terms to the left:

89-(21+2p)=0

We add all the numbers together, and all the variables

-(2p+21)+89=0

We get rid of parentheses

-2p-21+89=0

We add all the numbers together, and all the variables

-2p+68=0

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

-2p=-68

p=-68/-2

p=+34

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