3.x-4=x+8

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Solution for 3.x-4=x+8 equation: 



3.x-4=x+8

We move all terms to the left:

3.x-4-(x+8)=0

We get rid of parentheses

3.x-x-8-4=0

We add all the numbers together, and all the variables

2x-12=0

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

2x=12

x=12/2

x=6

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