3x-9=9-4x

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Solution for 3x-9=9-4x equation: 



3x-9=9-4x

We move all terms to the left:

3x-9-(9-4x)=0

We add all the numbers together, and all the variables

3x-(-4x+9)-9=0

We get rid of parentheses

3x+4x-9-9=0

We add all the numbers together, and all the variables

7x-18=0

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

7x=18

x=18/7

x=2+4/7

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