2(x+6)+9=21

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Solution for 2(x+6)+9=21 equation: 



2(x+6)+9=21

We move all terms to the left:

2(x+6)+9-(21)=0

We add all the numbers together, and all the variables

2(x+6)-12=0

We multiply parentheses

2x+12-12=0

We add all the numbers together, and all the variables

2x=0

x=0/2

x=0

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