7p=9p-4

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Solution for 7p=9p-4 equation: 



7p=9p-4

We move all terms to the left:

7p-(9p-4)=0

We get rid of parentheses

7p-9p+4=0

We add all the numbers together, and all the variables

-2p+4=0

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

-2p=-4

p=-4/-2

p=+2

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