7x-1=-12+21x

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Solution for 7x-1=-12+21x equation: 



7x-1=-12+21x

We move all terms to the left:

7x-1-(-12+21x)=0

We add all the numbers together, and all the variables

7x-(21x-12)-1=0

We get rid of parentheses

7x-21x+12-1=0

We add all the numbers together, and all the variables

-14x+11=0

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

-14x=-11

x=-11/-14

x=11/14

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