20-9w=4*15-w

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Solution for 20-9w=4*15-w equation: 



20-9w=4*15-w

We move all terms to the left:

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

We add all the numbers together, and all the variables

-9w-(-1w+60)+20=0

We get rid of parentheses

-9w+1w-60+20=0

We add all the numbers together, and all the variables

-8w-40=0

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

-8w=40

w=40/-8

w=-5

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