4(x+3)+9=21

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Solution for 4(x+3)+9=21 equation: 



4(x+3)+9=21

We move all terms to the left:

4(x+3)+9-(21)=0

We add all the numbers together, and all the variables

4(x+3)-12=0

We multiply parentheses

4x+12-12=0

We add all the numbers together, and all the variables

4x=0

x=0/4

x=0

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