7-w=-13

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Solution for 7-w=-13 equation: 



7-w=-13

We move all terms to the left:

7-w-(-13)=0

We add all the numbers together, and all the variables

-1w+20=0

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

-w=-20

w=-20/-1

w=+20

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