7w-21=28

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Solution for 7w-21=28 equation: 



7w-21=28

We move all terms to the left:

7w-21-(28)=0

We add all the numbers together, and all the variables

7w-49=0

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

7w=49

w=49/7

w=7

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