3(3x+7)=4x+5x+21

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Solution for 3(3x+7)=4x+5x+21 equation: 



3(3x+7)=4x+5x+21

We move all terms to the left:

3(3x+7)-(4x+5x+21)=0

We add all the numbers together, and all the variables

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

We multiply parentheses

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

We get rid of parentheses

9x-9x-21+21=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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