16=a-3.9

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Solution for 16=a-3.9 equation: 



16=a-3.9

We move all terms to the left:

16-(a-3.9)=0

We get rid of parentheses

-a+3.9+16=0

We add all the numbers together, and all the variables

-1a+19.9=0

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

-a=-19.9

a=-19.9/-1

a=19+0.9/1

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