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.80x + 0.20(90)=0.40(73)
We simplify the equation to the form, which is simple to understand
.80x + 0.20(90)=0.40(73)
Reorder the terms in parentheses
.80x+(+18)=0.40*(73)
Remove unnecessary parentheses
+.80x+18=0.40+*(+73+)
Reorder the terms in parentheses
.80x+18=+(+29.2)
Remove unnecessary parentheses
+.80x+18=+29.2
We move all terms containing x to the left and all other terms to the right.
+ 0.8x=+29.2-18
We simplify left and right side of the equation.
+ 0.8x=+11.2
We divide both sides of the equation by 0.8 to get x.
x=14
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