12=5x+4-2x+1

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Solution for 12=5x+4-2x+1 equation: 



12=5x+4-2x+1

We move all terms to the left:

12-(5x+4-2x+1)=0

We add all the numbers together, and all the variables

-(3x+5)+12=0

We get rid of parentheses

-3x-5+12=0

We add all the numbers together, and all the variables

-3x+7=0

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

-3x=-7

x=-7/-3

x=2+1/3

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