a) 2 1/2 : 1 1/3 + 3 3/4 * 4 1/5 =
( Dwie i jedna druga podzielić na jedną i jedną trzecią dodać trzy i trzy czwarte razy cztery i jedna piąta.
b) 8 1/8 * 1 3/13 - 6 1/4 : 7 1/7 =
c) 4/7 * 5 1/4 - 4 2/7 : 3 1/3 =
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a) 2 1/2 : 1 1/3 + 3 3/4 * 4 1/5 = 5/2 : 4/3 + 15/4 * 21/5 = 5/2 * 3/4 + 63/4 = 15/8+63/4 = 945/32 = 29 17/32
b) 8 1/8 * 1 3/13 - 6 1/4 : 7 1/7 = 65/8 * 16/13 - 25/4 * 7/50 = 130/13 - 7/8 = 10 - 7/8 = 9 1/8
c) 4/7 * 5 1/4 - 4 2/7 : 3 1/3 = 4/7 * 21/4 - 30/7 * 3/10 = 3 - 9/7 = 1 14/7 - 9/7 = 1 5/7