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0.57x + 0.65(x+19)=20.89
We simplify the equation to the form, which is simple to understand
0.57x + 0.65(x+19)=20.89
Reorder the terms in parentheses
0.57x+( + 0.65x+12.35)=20.89
Remove unnecessary parentheses
+ 0.57x + 0.65x+12.35=+20.89
We move all terms containing x to the left and all other terms to the right.
+ 0.57x + 0.65x=+20.89-12.35
We simplify left and right side of the equation.
+1.22x=+8.54
We divide both sides of the equation by 1.22 to get x.
x=7
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