11a-1=9a+15

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Solution for 11a-1=9a+15 equation: 



11a-1=9a+15

We move all terms to the left:

11a-1-(9a+15)=0

We get rid of parentheses

11a-9a-15-1=0

We add all the numbers together, and all the variables

2a-16=0

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

2a=16

a=16/2

a=8

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