3(7x-3)=12

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Solution for 3(7x-3)=12 equation: 



3(7x-3)=12

We move all terms to the left:

3(7x-3)-(12)=0

We multiply parentheses

21x-9-12=0

We add all the numbers together, and all the variables

21x-21=0

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

21x=21

x=21/21

x=1

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