3=4x-12-x

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



3=4x-12-x

We move all terms to the left:

3-(4x-12-x)=0

We add all the numbers together, and all the variables

-(3x-12)+3=0

We get rid of parentheses

-3x+12+3=0

We add all the numbers together, and all the variables

-3x+15=0

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

-3x=-15

x=-15/-3

x=+5

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