2(x+9)=21

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



2(x+9)=21

We move all terms to the left:

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

We multiply parentheses

2x+18-21=0

We add all the numbers together, and all the variables

2x-3=0

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

2x=3

x=3/2

x=1+1/2

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