iloczyn liczb 4 całe i jedna piąta i 2 całe siedem dziesiątych podziel przez ich iloraz
(4 1/5 * 2 7/10)/((4 1/5 / 2 7/10)=
(21/5*27/10)/(21/5 / 27/10)=
567/50 / (21/5*10/27)=
567/50 / 42/27=
567/50*27/42=
729/100=7 29/100
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(4 1/5 * 2 7/10)/((4 1/5 / 2 7/10)=
(21/5*27/10)/(21/5 / 27/10)=
567/50 / (21/5*10/27)=
567/50 / 42/27=
567/50*27/42=
729/100=7 29/100