2a-12=7

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Solution for 2a-12=7 equation: 



2a-12=7

We move all terms to the left:

2a-12-(7)=0

We add all the numbers together, and all the variables

2a-19=0

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

2a=19

a=19/2

a=9+1/2

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