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3(81x+3x+7)-2(121x-5x+9)=0
We simplify the equation to the form, which is simple to understand
3(81x+3x+7)-2(121x-5x+9)=0
Simplifying terms in parentheses
3*(+7+84x)-2*(121x-5x+9)=0
Simplifying terms in parentheses
3*(+7+84x)-2*(+9+116x)=0
Reorder the terms in parentheses
+(+21+252x)-2*(+9+116x)=0
Remove unnecessary parentheses
+21+252x-2+*(+9+116x+)=0
Reorder the terms in parentheses
+21+252x+(-18-232x)=0
Remove unnecessary parentheses
+21+252x-18-232x=0
We move all terms containing x to the left and all other terms to the right.
+252x-232x=0-21+18
We simplify left and right side of the equation.
+20x=-3
We divide both sides of the equation by 20 to get x.
x=-0.15
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