2w+2=20

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Solution for 2w+2=20 equation: 


w in (-oo:+oo)

2*w+2 = 20 // - 20

2*w-20+2 = 0

2*w-18 = 0 // + 18

2*w = 18 // : 2

w = 18/2

w = 9

w = 9

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