2.5w-3.9=-2.1

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Solution for 2.5w-3.9=-2.1 equation: 



2.5w-3.9=-2.1

We move all terms to the left:

2.5w-3.9-(-2.1)=0

We add all the numbers together, and all the variables

2.5w-1.8=0

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

2.5w=1.8

w=1.8/2.5

w=1/1.3888888888889

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