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0.50x + 0.10(200-x)=0.45x
We simplify the equation to the form, which is simple to understand
0.50x + 0.10(200-x)=0.45x
Reorder the terms in parentheses
0.50x+(+20-0.1x)=0.45x
Remove unnecessary parentheses
+ 0.50x+20-0.1x=0.45x
We move all terms containing x to the left and all other terms to the right.
+ 0.5x-0.1x-0.45x=-20
We simplify left and right side of the equation.
-0.05x=-20
We divide both sides of the equation by -0.05 to get x.
x=400
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