X-9+x+3(x-9)=39

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Solution for X-9+x+3(x-9)=39 equation: 



X-9+X+3(X-9)=39

We move all terms to the left:

X-9+X+3(X-9)-(39)=0

We add all the numbers together, and all the variables

2X+3(X-9)-48=0

We multiply parentheses

2X+3X-27-48=0

We add all the numbers together, and all the variables

5X-75=0

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

5X=75

X=75/5

X=15

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