9x+12-3x=72-4x

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Solution for 9x+12-3x=72-4x equation: 



9x+12-3x=72-4x

We move all terms to the left:

9x+12-3x-(72-4x)=0

We add all the numbers together, and all the variables

9x-3x-(-4x+72)+12=0

We add all the numbers together, and all the variables

6x-(-4x+72)+12=0

We get rid of parentheses

6x+4x-72+12=0

We add all the numbers together, and all the variables

10x-60=0

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

10x=60

x=60/10

x=6

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