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7x-3(-4x-9)=85
We simplify the equation to the form, which is simple to understand
7x-3(-4x-9)=85
Reorder the terms in parentheses
7x+(+12x+27)=85
Remove unnecessary parentheses
+7x+12x+27=+85
We move all terms containing x to the left and all other terms to the right.
+7x+12x=+85-27
We simplify left and right side of the equation.
+19x=+58
We divide both sides of the equation by 19 to get x.
x=3.05263157895
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