oblicz
a) 2 1/4 -3 1/2-3 1/2=
b) 4 1/6-2 2/3-3 1/2=
c) 1 2/5-3 3/4-2 3/10=
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b) 4 1/6-2 2/3-3 1/2=3 7/6 - 2 4/6 - 3 3/6 = 1 3/6-3 3/6 = -2
c) 1 2/5-3 3/4-2 3/10=1 8/20- 3 15/20 - 2 6/10= -2 7/20 - 2 6/10 =- 4 13/20
b) 4 1/6-2 2/3-3 1/2 = 25/6 - 16/6 - 21/6 = - 12/6 = -2
c) 1 2/5-3 3/4-2 3/10 = 12/5 - 15/4 - 23/10 = 48/20 - 75/20 - 46/20 = - 73/20 = -3 13/20