a) 4/5
b) 10/15 + 9/15 = 1 i 4/15
c) 27/63 + 14/63 = 41/63
d) 2/4
e) 9/24 + 16/24 = 1 i 1/24
f) 13/65 - 15/65 = (-2/65)
g) 5/6 + 5 i 4/5 = 5/6 + 29/5 = 25/30 + 174/30 = 6 i 19/30
h) 3/10 + 17 i 35/100 = 30/100 + 1735/100 = 1765/100 = 17 i 65/100
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