10x=81+x

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Solution for 10x=81+x equation: 



10x=81+x

We move all terms to the left:

10x-(81+x)=0

We add all the numbers together, and all the variables

10x-(x+81)=0

We get rid of parentheses

10x-x-81=0

We add all the numbers together, and all the variables

9x-81=0

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

9x=81

x=81/9

x=9

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