-81=-7x-3x-1

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Solution for -81=-7x-3x-1 equation:


-81=-7x-3x-1

We simplify the equation to the form, which is simple to understand 
-81=-7x-3x-1

We move all terms containing x to the left and all other terms to the right. 
+7x+3x=-1+81

We simplify left and right side of the equation. 
+10x=+80

We divide both sides of the equation by 10 to get x. 
x=8

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