-21a+28a+6=10.2

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Solution for -21a+28a+6=10.2 equation: 



-21a+28a+6=10.2

We move all terms to the left:

-21a+28a+6-(10.2)=0

We add all the numbers together, and all the variables

7a-4.2=0

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

7a=4.2

a=4.2/7

a=3.5/5.8333333333333

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