9p-7p=20

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Solution for 9p-7p=20 equation: 



9p-7p=20

We move all terms to the left:

9p-7p-(20)=0

We add all the numbers together, and all the variables

2p-20=0

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

2p=20

p=20/2

p=10

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