-81=6x-3(x+18)

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Solution for -81=6x-3(x+18) equation:


-81=6x-3(x+18)

We simplify the equation to the form, which is simple to understand 
-81=6x-3(x+18)

Reorder the terms in parentheses
-81=6x+(-3x-54)

Remove unnecessary parentheses
-81=+6x-3x-54

We move all terms containing x to the left and all other terms to the right. 
-6x+3x=-54+81

We simplify left and right side of the equation. 
-3x=+27

We divide both sides of the equation by -3 to get x. 
x=-9

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