3-4x=9+x

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



3-4x=9+x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-4x-x-9+3=0

We add all the numbers together, and all the variables

-5x-6=0

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

-5x=6

x=6/-5

x=-1+1/5

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