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.8(x-800)+1.3=2.9+.2x
We simplify the equation to the form, which is simple to understand
.8(x-800)+1.3=2.9+.2x
Reorder the terms in parentheses
+( + 0.8x-640)+1.3=2.9+.2x
Remove unnecessary parentheses
+ 0.8x-640+1.3=+2.9+.2x
We move all terms containing x to the left and all other terms to the right.
+ 0.8x-0.2x=+2.9+640-1.3
We simplify left and right side of the equation.
+ 0.6x=+641.6
We divide both sides of the equation by 0.6 to get x.
x=1069.3333333333
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