Предвадительно сократив дроби, найдите значение выражения
30/54+22/30
28/40-10/75
12/27+14/21
14/24-15/40
12/18-5/60
4/24+3/36
30/54+22/30
28/40-10/75
12/27+14/21
14/24-15/40
12/18-5/60
4/24+3/36
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