2p+8=21

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Solution for 2p+8=21 equation: 



2p+8=21

We move all terms to the left:

2p+8-(21)=0

We add all the numbers together, and all the variables

2p-13=0

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

2p=13

p=13/2

p=6+1/2

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