oblicz a) 42/21-12/7 b)6/5-39/50
a) 2/7
b) 21/50
a) 42/21 - 36/21 = 6/21
b) 60/50 - 39/50 = 21/50
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a) 2/7
b) 21/50
a) 42/21 - 36/21 = 6/21
b) 60/50 - 39/50 = 21/50