4x-9=12-13x

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Solution for 4x-9=12-13x equation: 



4x-9=12-13x

We move all terms to the left:

4x-9-(12-13x)=0

We add all the numbers together, and all the variables

4x-(-13x+12)-9=0

We get rid of parentheses

4x+13x-12-9=0

We add all the numbers together, and all the variables

17x-21=0

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

17x=21

x=21/17

x=1+4/17

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