W/10+18=21

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Solution for W/10+18=21 equation: 


W in (-oo:+oo)

W/10+18 = 21 // - 21

W/10-21+18 = 0

1/10*W-3 = 0 // + 3

1/10*W = 3 // : 1/10

W = 3/1/10

W = 30

W = 30

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