13=7-2w

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Solution for 13=7-2w equation: 



13=7-2w

We move all terms to the left:

13-(7-2w)=0

We add all the numbers together, and all the variables

-(-2w+7)+13=0

We get rid of parentheses

2w-7+13=0

We add all the numbers together, and all the variables

2w+6=0

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

2w=-6

w=-6/2

w=-3

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