21=3+w/4

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Solution for 21=3+w/4 equation: 



21=3+w/4

We move all terms to the left:

21-(3+w/4)=0

We add all the numbers together, and all the variables

-(w/4+3)+21=0

We get rid of parentheses

-w/4-3+21=0

We multiply all the terms by the denominator


-w-3*4+21*4=0

We add all the numbers together, and all the variables

-1w+72=0

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

-w=-72

w=-72/-1

w=+72

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