X+(3+x)=9

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



X+(3+X)=9

We move all terms to the left:

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

We add all the numbers together, and all the variables

X+(X+3)-9=0

We get rid of parentheses

X+X+3-9=0

We add all the numbers together, and all the variables

2X-6=0

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

2X=6

X=6/2

X=3

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