21=w+4(6-w)

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Solution for 21=w+4(6-w) equation: 



21=w+4(6-w)

We move all terms to the left:

21-(w+4(6-w))=0

We add all the numbers together, and all the variables

-(w+4(-1w+6))+21=0



We calculate terms in parentheses: -(w+4(-1w+6)), so:

w+4(-1w+6)

We multiply parentheses

w-4w+24

We add all the numbers together, and all the variables

-3w+24

Back to the equation:

-(-3w+24)



We get rid of parentheses

3w-24+21=0

We add all the numbers together, and all the variables

3w-3=0

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

3w=3

w=3/3

w=1

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