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.5(x+2)-.2(x-7)=0
We simplify the equation to the form, which is simple to understand
.5(x+2)-.2(x-7)=0
Reorder the terms in parentheses
+( + 0.5x+1)-.2*(x-7)=0
Remove unnecessary parentheses
+ 0.5x+1-.2+*(+x-7+)=0
Reorder the terms in parentheses
+ 0.5x+1+(-0.2x+1.4)=0
Remove unnecessary parentheses
+ 0.5x+1-0.2x+1.4=0
We move all terms containing x to the left and all other terms to the right.
+ 0.5x-0.2x=0-1-1.4
We simplify left and right side of the equation.
+ 0.3x=-2.4
We divide both sides of the equation by 0.3 to get x.
x=-8
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