18a+5a+5a-21a=14

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Solution for 18a+5a+5a-21a=14 equation: 



18a+5a+5a-21a=14

We move all terms to the left:

18a+5a+5a-21a-(14)=0

We add all the numbers together, and all the variables

7a-14=0

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

7a=14

a=14/7

a=2

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