12x+1=21x+4

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Solution for 12x+1=21x+4 equation: 



12x+1=21x+4

We move all terms to the left:

12x+1-(21x+4)=0

We get rid of parentheses

12x-21x-4+1=0

We add all the numbers together, and all the variables

-9x-3=0

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

-9x=3

x=3/-9

x=-1/3

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