7a-11=9a-7

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Solution for 7a-11=9a-7 equation: 



7a-11=9a-7

We move all terms to the left:

7a-11-(9a-7)=0

We get rid of parentheses

7a-9a+7-11=0

We add all the numbers together, and all the variables

-2a-4=0

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

-2a=4

a=4/-2

a=-2

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