3(-x+3)/3+21=31

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Solution for 3(-x+3)/3+21=31 equation: 



3(-x+3)/3+21=31

We move all terms to the left:

3(-x+3)/3+21-(31)=0

We add all the numbers together, and all the variables

3(-1x+3)/3+21-31=0

We add all the numbers together, and all the variables

3(-1x+3)/3-10=0

We multiply all the terms by the denominator


3(-1x+3)-10*3=0

We add all the numbers together, and all the variables

3(-1x+3)-30=0

We multiply parentheses

-3x+9-30=0

We add all the numbers together, and all the variables

-3x-21=0

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

-3x=21

x=21/-3

x=-7

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