2w+0.8=3.9

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Solution for 2w+0.8=3.9 equation: 



2w+0.8=3.9

We move all terms to the left:

2w+0.8-(3.9)=0

We add all the numbers together, and all the variables

2w-3.1=0

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

2w=3.1

w=3.1/2

w=1+1/1.8181818181818

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