2(2x+)-9=21

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



2(2x+)-9=21

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

2(+2x)-30=0

We multiply parentheses

4x-30=0

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

4x=30

x=30/4

x=7+1/2

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