4p+-9=-2p+21

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Solution for 4p+-9=-2p+21 equation: 



4p+-9=-2p+21

We move all terms to the left:

4p+-9-(-2p+21)=0

We add all the numbers together, and all the variables

4p-(-2p+21)=0

We get rid of parentheses

4p+2p-21=0

We add all the numbers together, and all the variables

6p-21=0

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

6p=21

p=21/6

p=3+1/2

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