Răspuns:
a × b = 64/75
b = 64/75 : a
a)
a = 16/15
b = 64/75 : 16/15 = 64/75 × 15/16 = 4/5
b)
a = 48/35
b = 64/75 : 48/35 = 64/75 × 35/48 = 4/15 × 7/3 = 28/45
c)
a = 56/25
b = 64/75 : 56/25 = 64/75 × 25/56 = 8/3 × 1/7 = 8/21
d)
a = 96/45
b = 64/75 : 96/45 = 64/75 × 45/96 = 2/13 × 9/3 = 6/13
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