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8.5+6(20-x)=20(7)
We simplify the equation to the form, which is simple to understand
8.5+6(20-x)=20(7)
Reorder the terms in parentheses
8.5+(+120-6x)=20*(7)
Remove unnecessary parentheses
+8.5+120-6x=+20+*(+7+)
Reorder the terms in parentheses
8.5+120-6x=+(+140)
Remove unnecessary parentheses
+8.5+120-6x=+140
We move all terms containing x to the left and all other terms to the right.
-6x=+140-8.5-120
We simplify left and right side of the equation.
-6x=+11.5
We divide both sides of the equation by -6 to get x.
x=-1.91666666667
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