7a-9=5a-7

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Solution for 7a-9=5a-7 equation: 



7a-9=5a-7

We move all terms to the left:

7a-9-(5a-7)=0

We get rid of parentheses

7a-5a+7-9=0

We add all the numbers together, and all the variables

2a-2=0

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

2a=2

a=2/2

a=1

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