9(5a+9)=42a

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Solution for 9(5a+9)=42a equation: 



9(5a+9)=42a

We move all terms to the left:

9(5a+9)-(42a)=0

We add all the numbers together, and all the variables

-42a+9(5a+9)=0

We multiply parentheses

-42a+45a+81=0

We add all the numbers together, and all the variables

3a+81=0

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

3a=-81

a=-81/3

a=-27

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