14a-7=21

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Solution for 14a-7=21 equation: 



14a-7=21

We move all terms to the left:

14a-7-(21)=0

We add all the numbers together, and all the variables

14a-28=0

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

14a=28

a=28/14

a=2

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