Odpowiedź:
a) 1/2 + 1/3 = 3/6 +2/6 =5/6
b) 2 3/7 +2/5 = 2 15/35 + 14/35 = 2 29/35
c ) 14 2/3 + 6 1/3 = 21
d) 8 3/4 +1/6 + 3 5/8 = 8 18/24 + 4/24 + 3 15/24 =11 37/24 = 12 13/24
e) 232 5/7 +11 3/5 = 232 25/35+11 21/35=34 46/35 = 35 11/35
f) 8/11 - 2/3 = 24/33 - 22/33 = 2/33
g) 16 5/9 - 2 1/3= 16 5/9 - 2 3/9 = 14 2/9
h) 2 3/8 - 6/7= 2 21/56 -48/56 = 1 77/56 - 48 /56 = 1 29 /56
i) 126 1/5 - 2/3 = 126 3/15 - 10/15 = 125 18/15 - 10/15= 125 8/15
j) 48 7/10 - 13 1/4 = 48 14/20 - 13 5/20 = 35 9/20
k56 2/9 - 7 7/8 = 56 16/72 - 7 63/72 = 55 88/72 - 7 63/72= 48 25/72
l) 13 7/12 - 9 8/9 = 13 21/36 - 9 32/36= 13 57/36-9 32/36 = 4 25/36
