Resposta :
\/(93/21) - \/(21/93) =
\/31/7) - \/(7/31) =
\/31/\/7 - \/7/\/31
mmc \/7 e \/31 = \/7 x \/31
[(\/31)² - (\/7)²] / \/7x\/31 =
(31-7)/ \/217 =
24/ \/217 = 24\/217/217
simplifique a expressao v93 sobre21-v21sobre 93
\/(93/21) - \/(21/93) =
\/31/7) - \/(7/31) =
\/31/\/7 - \/7/\/31
mmc \/7 e \/31 = \/7 x \/31
[(\/31)² - (\/7)²] / \/7x\/31 =
(31-7)/ \/217 =
24/ \/217 = 24\/217/217