81=-9x+18

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Solution for 81=-9x+18 equation: 



81=-9x+18

We move all terms to the left:

81-(-9x+18)=0

We get rid of parentheses

9x-18+81=0

We add all the numbers together, and all the variables

9x+63=0

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

9x=-63

x=-63/9

x=-7

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