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a ) 4 cale 1/7 = 3 cale .8../7 8 calych 3/5 = 7 calych..8. /5 11 calych 5/12 = 10 calych ..17. /12 b) 10 calych 3/10 = 9 calych .13.. /3 4 cale 4/19 = . 3 cale .23../19 2 cale 3/23 = 1 cala ...26 /23 c) 4 cale 2/3 = ..14./3 3 cale 3/5 = ..18. / 5 6 calych 5/8 = .53../8 d) 7 calych = ..28./4 13 calych = ..39./3 15 calych = ..60./4