(3x-12)-4x=72

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Solution for (3x-12)-4x=72 equation: 



(3x-12)-4x=72

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-4x+3x-12-72=0

We add all the numbers together, and all the variables

-1x-84=0

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

-x=84

x=84/-1

x=-84

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