x+12=4x-18=3x-4

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Solution for x+12=4x-18=3x-4 equation: 



x+12=4x-18=3x-4

We move all terms to the left:

x+12-(4x-18)=0

We get rid of parentheses

x-4x+18+12=0

We add all the numbers together, and all the variables

-3x+30=0

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

-3x=-30

x=-30/-3

x=+10

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