(3x-12)+(x-8)=0

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Solution for (3x-12)+(x-8)=0 equation: 



(3x-12)+(x-8)=0

We get rid of parentheses

3x+x-12-8=0

We add all the numbers together, and all the variables

4x-20=0

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

4x=20

x=20/4

x=5

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