20-9w=4(15-4w)

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Solution for 20-9w=4(15-4w) equation: 



20-9w=4(15-4w)

We move all terms to the left:

20-9w-(4(15-4w))=0

We add all the numbers together, and all the variables

-9w-(4(-4w+15))+20=0



We calculate terms in parentheses: -(4(-4w+15)), so:

4(-4w+15)

We multiply parentheses

-16w+60

Back to the equation:

-(-16w+60)



We get rid of parentheses

-9w+16w-60+20=0

We add all the numbers together, and all the variables

7w-40=0

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

7w=40

w=40/7

w=5+5/7

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