18-7w=20.5

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Solution for 18-7w=20.5 equation: 



18-7w=20.5

We move all terms to the left:

18-7w-(20.5)=0

We add all the numbers together, and all the variables

-7w-2.5=0

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

-7w=2.5

w=2.5/-7

w=-2.5/7

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