8=9w-7w

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Solution for 8=9w-7w equation: 



8=9w-7w

We move all terms to the left:

8-(9w-7w)=0

We add all the numbers together, and all the variables

-(+2w)+8=0

We get rid of parentheses

-2w+8=0

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

-2w=-8

w=-8/-2

w=+4

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