9x-21=708

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Solution for 9x-21=708 equation: 



9x-21=708

We move all terms to the left:

9x-21-(708)=0

We add all the numbers together, and all the variables

9x-729=0

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

9x=729

x=729/9

x=81

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