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.11x-9=.04(x-81)
We simplify the equation to the form, which is simple to understand
.11x-9=.04(x-81)
Reorder the terms in parentheses
.11x-9=+( + 0.04x-3.24)
Remove unnecessary parentheses
+.11x-9=0.04x-3.24
We move all terms containing x to the left and all other terms to the right.
+ 0.11x-0.04x=-3.24+9
We simplify left and right side of the equation.
+ 0.07x=+5.76
We divide both sides of the equation by 0.07 to get x.
x=82.285714285714
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