x+3x+6=9+x+x

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Solution for x+3x+6=9+x+x equation: 



x+3x+6=9+x+x

We move all terms to the left:

x+3x+6-(9+x+x)=0

We add all the numbers together, and all the variables

x+3x-(2x+9)+6=0

We add all the numbers together, and all the variables

4x-(2x+9)+6=0

We get rid of parentheses

4x-2x-9+6=0

We add all the numbers together, and all the variables

2x-3=0

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

2x=3

x=3/2

x=1+1/2

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