bjr
130/60 + 55/60² + 23/60³ = (dénominateur commun 60³)
(130 x 60²) / 60³ + (55 x 60) / 60³ + 23/60³ =
[(130 x 60²) + (55 x 60) + 23] / 60³ = (468000 + 3300 + 23)/60³
= 471323 / 216000
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bjr
130/60 + 55/60² + 23/60³ = (dénominateur commun 60³)
(130 x 60²) / 60³ + (55 x 60) / 60³ + 23/60³ =
[(130 x 60²) + (55 x 60) + 23] / 60³ = (468000 + 3300 + 23)/60³
= 471323 / 216000