3(2x+1)=12-3(-3)

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Solution for 3(2x+1)=12-3(-3) equation: 



3(2x+1)=12-3(-3)

We move all terms to the left:

3(2x+1)-(12-3(-3))=0

We add all the numbers together, and all the variables

3(2x+1)-21=0

We multiply parentheses

6x+3-21=0

We add all the numbers together, and all the variables

6x-18=0

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

6x=18

x=18/6

x=3

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