(3x-12)=78

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Solution for (3x-12)=78 equation: 



(3x-12)=78

We move all terms to the left:

(3x-12)-(78)=0

We get rid of parentheses

3x-12-78=0

We add all the numbers together, and all the variables

3x-90=0

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

3x=90

x=90/3

x=30

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