4+w=7w-20

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Solution for 4+w=7w-20 equation: 


w in (-oo:+oo)

w+4 = 7*w-20 // - 7*w-20

w-(7*w)+4+20 = 0

w-7*w+4+20 = 0

24-6*w = 0 // - 24

-6*w = -24 // : -6

w = -24/(-6)

w = 4

w = 4

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