21-19=5w-4w

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Solution for 21-19=5w-4w equation: 



21-19=5w-4w

We move all terms to the left:

21-19-(5w-4w)=0

We add all the numbers together, and all the variables

-(+w)+21-19=0

We add all the numbers together, and all the variables

-(+w)+2=0

We get rid of parentheses

-w+2=0

We add all the numbers together, and all the variables

-1w+2=0

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

-w=-2

w=-2/-1

w=+2

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