6a-3(a+5)=a+9

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Solution for 6a-3(a+5)=a+9 equation: 



6a-3(a+5)=a+9

We move all terms to the left:

6a-3(a+5)-(a+9)=0

We multiply parentheses

6a-3a-(a+9)-15=0

We get rid of parentheses

6a-3a-a-9-15=0

We add all the numbers together, and all the variables

2a-24=0

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

2a=24

a=24/2

a=12

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