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x+2x+(2x+3)=39
We simplify the equation to the form, which is simple to understand
x+2x+(2x+3)=39
Remove unnecessary parentheses
+x+2x+2x+3=+39
We move all terms containing x to the left and all other terms to the right.
+1x+2x+2x=+39-3
We simplify left and right side of the equation.
+5x=+36
We divide both sides of the equation by 5 to get x.
x=7.2
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