3(7x+6)=21x+9

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Solution for 3(7x+6)=21x+9 equation: 



3(7x+6)=21x+9

We move all terms to the left:

3(7x+6)-(21x+9)=0

We multiply parentheses

21x-(21x+9)+18=0

We get rid of parentheses

21x-21x-9+18=0

We add all the numbers together, and all the variables

9!=0

There is no solution for this equation

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