18-7x=81

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Solution for 18-7x=81 equation: 



18-7x=81

We move all terms to the left:

18-7x-(81)=0

We add all the numbers together, and all the variables

-7x-63=0

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

-7x=63

x=63/-7

x=-9

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