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(2.5x+6)+(2.5x+6)+(2.5x+6)=180
We simplify the equation to the form, which is simple to understand
(2.5x+6)+(2.5x+6)+(2.5x+6)=180
Remove unnecessary parentheses
2.5x+6+(2.5x+6)+(2.5x+6)=180
Remove unnecessary parentheses
+2.5x+6+2.5x+6+(+2.5x+6+)=+180
Remove unnecessary parentheses
+2.5x+6+2.5x+6+2.5x+6=+180
We move all terms containing x to the left and all other terms to the right.
+2.5x+2.5x+2.5x=+180-6-6-6
We simplify left and right side of the equation.
+7.5x=+162
We divide both sides of the equation by 7.5 to get x.
x=21.6
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