12.4=4+3x+1

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Solution for 12.4=4+3x+1 equation: 



12.4=4+3x+1

We move all terms to the left:

12.4-(4+3x+1)=0

We add all the numbers together, and all the variables

-(3x+5)+12.4=0

We get rid of parentheses

-3x-5+12.4=0

We add all the numbers together, and all the variables

-3x+7.4=0

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

-3x=-7.4

x=-7.4/-3

x=2+1/2.1428571428571

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