9x+9x-21=33

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



9x+9x-21=33

We move all terms to the left:

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

We add all the numbers together, and all the variables

18x-54=0

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

18x=54

x=54/18

x=3

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