10p+21=81

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Solution for 10p+21=81 equation: 



10p+21=81

We move all terms to the left:

10p+21-(81)=0

We add all the numbers together, and all the variables

10p-60=0

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

10p=60

p=60/10

p=6

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