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0.80x + 0.60(90)=0.40(69)
We simplify the equation to the form, which is simple to understand
0.80x + 0.60(90)=0.40(69)
Reorder the terms in parentheses
0.80x+(+54)=0.40*(69)
Remove unnecessary parentheses
+ 0.80x+54=0.40+*(+69+)
Reorder the terms in parentheses
0.80x+54=+(+27.6)
Remove unnecessary parentheses
+ 0.80x+54=+27.6
We move all terms containing x to the left and all other terms to the right.
+ 0.8x=+27.6-54
We simplify left and right side of the equation.
+ 0.8x=-26.4
We divide both sides of the equation by 0.8 to get x.
x=-33
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