7-6a=21

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Solution for 7-6a=21 equation: 



7-6a=21

We move all terms to the left:

7-6a-(21)=0

We add all the numbers together, and all the variables

-6a-14=0

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

-6a=14

a=14/-6

a=-2+1/3

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