3(3x+21)=99

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Solution for 3(3x+21)=99 equation: 



3(3x+21)=99

We move all terms to the left:

3(3x+21)-(99)=0

We multiply parentheses

9x+63-99=0

We add all the numbers together, and all the variables

9x-36=0

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

9x=36

x=36/9

x=4

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