231=42k/20

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Solution for 231=42k/20 equation: 


k in (-oo:+oo)

231 = (42*k)/20 // - (42*k)/20

231-((42*k)/20) = 0

(-21/10)*k+231 = 0

231-21/10*k = 0 // - 231

-21/10*k = -231 // : -21/10

k = -231/(-21/10)

k = 110

k = 110

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