6.8=a+3.9

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Solution for 6.8=a+3.9 equation: 



6.8=a+3.9

We move all terms to the left:

6.8-(a+3.9)=0

We get rid of parentheses

-a-3.9+6.8=0

We add all the numbers together, and all the variables

-1a+2.9=0

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

-a=-2.9

a=-2.9/-1

a=2+0.9/1

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