12=3+5x-12

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Solution for 12=3+5x-12 equation: 



12=3+5x-12

We move all terms to the left:

12-(3+5x-12)=0

We add all the numbers together, and all the variables

-(5x-9)+12=0

We get rid of parentheses

-5x+9+12=0

We add all the numbers together, and all the variables

-5x+21=0

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

-5x=-21

x=-21/-5

x=4+1/5

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