213=-3(1+7x)-6x

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Solution for 213=-3(1+7x)-6x equation:


213=-3(1+7x)-6x

We simplify the equation to the form, which is simple to understand 
213=-3(1+7x)-6x

Reorder the terms in parentheses
213=+(-3-21x)-6x

Remove unnecessary parentheses
+213=-3-21x-6x

We move all terms containing x to the left and all other terms to the right. 
+21x+6x=-3-213

We simplify left and right side of the equation. 
+27x=-216

We divide both sides of the equation by 27 to get x. 
x=-8

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