3x+21=9x+33

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Solution for 3x+21=9x+33 equation: 



3x+21=9x+33

We move all terms to the left:

3x+21-(9x+33)=0

We get rid of parentheses

3x-9x-33+21=0

We add all the numbers together, and all the variables

-6x-12=0

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

-6x=12

x=12/-6

x=-2

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