a-2.9=-6.78

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Solution for a-2.9=-6.78 equation: 



a-2.9=-6.78

We move all terms to the left:

a-2.9-(-6.78)=0

We add all the numbers together, and all the variables

a+3.88=0

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

a=-3.88

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