X+(3x-1)+(4x+2)=81

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Solution for X+(3x-1)+(4x+2)=81 equation: 



X+(3X-1)+(4X+2)=81

We move all terms to the left:

X+(3X-1)+(4X+2)-(81)=0

We get rid of parentheses

X+3X+4X-1+2-81=0

We add all the numbers together, and all the variables

8X-80=0

We move all terms containing X to the left, all other terms to the right

8X=80

X=80/8

X=10

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