3a-7=9

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Solution for 3a-7=9 equation: 



3a-7=9

We move all terms to the left:

3a-7-(9)=0

We add all the numbers together, and all the variables

3a-16=0

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

3a=16

a=16/3

a=5+1/3

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