w-4.2=8.7

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Solution for w-4.2=8.7 equation: 



w-4.2=8.7

We move all terms to the left:

w-4.2-(8.7)=0

We add all the numbers together, and all the variables

w-12.9=0

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

w=12.9

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