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60x+40(100-x)=50
We simplify the equation to the form, which is simple to understand
60x+40(100-x)=50
Reorder the terms in parentheses
60x+(+4000-40x)=50
Remove unnecessary parentheses
+60x+4000-40x=+50
We move all terms containing x to the left and all other terms to the right.
+60x-40x=+50-4000
We simplify left and right side of the equation.
+20x=-3950
We divide both sides of the equation by 20 to get x.
x=-197.5
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