9a+1=7a-9

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Solution for 9a+1=7a-9 equation: 



9a+1=7a-9

We move all terms to the left:

9a+1-(7a-9)=0

We get rid of parentheses

9a-7a+9+1=0

We add all the numbers together, and all the variables

2a+10=0

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

2a=-10

a=-10/2

a=-5

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