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X+(2X-1)/3=13
We move all terms to the left:
X+(2X-1)/3-(13)=0
We multiply all the terms by the denominator
X*3+(2X-1)-13*3=0
We add all the numbers together, and all the variables
X*3+(2X-1)-39=0
Wy multiply elements
3X+(2X-1)-39=0
We get rid of parentheses
3X+2X-1-39=0
We add all the numbers together, and all the variables
5X-40=0
We move all terms containing X to the left, all other terms to the right
5X=40
X=40/5
X=8
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