12=x*3

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Solution for 12=x*3 equation: 



12=x*3

We move all terms to the left:

12-(x*3)=0

We add all the numbers together, and all the variables

-(+x*3)+12=0

We get rid of parentheses

-x*3+12=0

Wy multiply elements

-3x+12=0

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

-3x=-12

x=-12/-3

x=+4

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