9(9+x)=21

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



9(9+x)=21

We move all terms to the left:

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

We add all the numbers together, and all the variables

9(x+9)-21=0

We multiply parentheses

9x+81-21=0

We add all the numbers together, and all the variables

9x+60=0

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

9x=-60

x=-60/9

x=-6+2/3

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