3x+12=6x-13.8

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Solution for 3x+12=6x-13.8 equation: 



3x+12=6x-13.8

We move all terms to the left:

3x+12-(6x-13.8)=0

We get rid of parentheses

3x-6x+13.8+12=0

We add all the numbers together, and all the variables

-3x+25.8=0

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

-3x=-25.8

x=-25.8/-3

x=8+1/1.6666666666667

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