9-4x=12+9x

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Solution for 9-4x=12+9x equation: 



9-4x=12+9x

We move all terms to the left:

9-4x-(12+9x)=0

We add all the numbers together, and all the variables

-4x-(9x+12)+9=0

We get rid of parentheses

-4x-9x-12+9=0

We add all the numbers together, and all the variables

-13x-3=0

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

-13x=3

x=3/-13

x=-3/13

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