PROSZE O POMOC NA JUTRO!!!!! OBLICZ.PAMIETAJ O KOLEJNOSCI WYKONYWANIA DZIALAN. a) 5calych i 3/10-2 cale i 4/5- 1 cala i 3/4=? b)12 calych i 5/6-10calych i 2/3+7 calych i 3/5=? c) 36/35-5/7-5/35=? d)6 calych i 3/10+3cale i 4/5-3cale i 2/5+3cale i 1/2

a) 5 i 3/10 -2 i 4/5 - 1 i 3/4 ( rozszerzamy do wspólnego mianownika) = 5 i 12/40 - 2 i 32/40 - 1 i 30/40 = 4 i 52/40 - 2 i 32/40 - 1 i 30/40 = 2 i 20/40 - 1 i 30/40 = 1 i 60/40 - 1 i 30/40 = 30/40 = 3/4 b) 12 i 5/6 - 10 i 2/3 + 7 i 3/5 ( tu to samo ten sam mianownik musi byc) = 12 i 25/30 - 10 i 20/30 + 7 i 18/30 = 2 i 5/30 + 7 i 18/30 = 9 i 23/30 c) 36/35 - 5/7 - 5/35 = 36/35 - 25/35 - 5/35 = 6/35   d) 6 i 3/10+ 3 i 4/5 - 3 i 2/5 + 3 i 1/2 = 6 i 3/10 + 3 i 8/10 - 3 i 4/5 + 3 5/10 = 10 i 1/10 - 6 i 9/10 = 9 i 11/10 - 6 i 9/10 = 3 i 2/10 = 3 i 1/5 e) 10 i 1/6 - (12 i 3/4 - 7 i 5/6) - 3 i 1/2 = 10 i 1/6 - ( 12 i 18/24 - 7 i 20/24= 11 i 42/24 - 7 i 20/24 = 4 i 22/24 = 4 11/12