3(4x+5)=21x+6-9x+9

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Solution for 3(4x+5)=21x+6-9x+9 equation: 



3(4x+5)=21x+6-9x+9

We move all terms to the left:

3(4x+5)-(21x+6-9x+9)=0

We add all the numbers together, and all the variables

3(4x+5)-(12x+15)=0

We multiply parentheses

12x-(12x+15)+15=0

We get rid of parentheses

12x-12x-15+15=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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