2w-1=21

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Solution for 2w-1=21 equation: 


w in (-oo:+oo)

2*w-1 = 21 // - 21

2*w-21-1 = 0

2*w-22 = 0 // + 22

2*w = 22 // : 2

w = 22/2

w = 11

w = 11

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