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x/2+(x/2+1.4)=15
We simplify the equation to the form, which is simple to understand
x/2+(x/2+1.4)=15
Remove unnecessary parentheses
+ 0.5x + 0.5x+1.4=+15
We move all terms containing x to the left and all other terms to the right.
+ 0.5x + 0.5x=+15-1.4
We simplify left and right side of the equation.
+1x=+13.6
We divide both sides of the equation by 1 to get x.
x=13.6
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