5a-9=7a

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Solution for 5a-9=7a equation: 



5a-9=7a

We move all terms to the left:

5a-9-(7a)=0

We add all the numbers together, and all the variables

-2a-9=0

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

-2a=9

a=9/-2

a=-4+1/2

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