6x+9=9x-4x

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Solution for 6x+9=9x-4x equation: 



6x+9=9x-4x

We move all terms to the left:

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

We add all the numbers together, and all the variables

6x-(+5x)+9=0

We get rid of parentheses

6x-5x+9=0

We add all the numbers together, and all the variables

x+9=0

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

x=-9

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