81=x+61

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Solution for 81=x+61 equation: 



81=x+61

We move all terms to the left:

81-(x+61)=0

We get rid of parentheses

-x-61+81=0

We add all the numbers together, and all the variables

-1x+20=0

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

-x=-20

x=-20/-1

x=+20

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