15x-4x=9-x

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Solution for 15x-4x=9-x equation: 



15x-4x=9-x

We move all terms to the left:

15x-4x-(9-x)=0

We add all the numbers together, and all the variables

15x-4x-(-1x+9)=0

We add all the numbers together, and all the variables

11x-(-1x+9)=0

We get rid of parentheses

11x+1x-9=0

We add all the numbers together, and all the variables

12x-9=0

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

12x=9

x=9/12

x=3/4

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