12(2x-1)=9(2x+1)+21

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Solution for 12(2x-1)=9(2x+1)+21 equation: 



12(2x-1)=9(2x+1)+21

We move all terms to the left:

12(2x-1)-(9(2x+1)+21)=0

We multiply parentheses

24x-(9(2x+1)+21)-12=0



We calculate terms in parentheses: -(9(2x+1)+21), so:

9(2x+1)+21

We multiply parentheses

18x+9+21

We add all the numbers together, and all the variables

18x+30

Back to the equation:

-(18x+30)



We get rid of parentheses

24x-18x-30-12=0

We add all the numbers together, and all the variables

6x-42=0

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

6x=42

x=42/6

x=7

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