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(3x+5)+x+2x=139
We simplify the equation to the form, which is simple to understand
(3x+5)+x+2x=139
Remove unnecessary parentheses
3x+5+x+2x=139
We move all terms containing x to the left and all other terms to the right.
+3x+1x+2x=+139-5
We simplify left and right side of the equation.
+6x=+134
We divide both sides of the equation by 6 to get x.
x=22.333333333333
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