20(1/4w-2/5)

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Solution for 20(1/4w-2/5) equation: 


w in (-oo:+oo)

20*((1/4)*w-(2/5)) = 0

20*((1/4)*w-2/5) = 0

20*(1/4*w-2/5) = 0

( 1/4*w-2/5 )

1/4*w-2/5 = 0 // + 2/5

1/4*w = 2/5 // : 1/4

w = 2/5/1/4

w = 8/5

( 20 )

20 = 0

w belongs to the empty set

w = 8/5

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