3x+4x=9x+4

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



3x+4x=9x+4

We move all terms to the left:

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

We add all the numbers together, and all the variables

7x-(9x+4)=0

We get rid of parentheses

7x-9x-4=0

We add all the numbers together, and all the variables

-2x-4=0

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

-2x=4

x=4/-2

x=-2

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