Найдите сумму или разность: а) 5\24 + 3\8=
б) 7\10- 2\5=
в) 7/9 - 5\7 =
г) 2+3 + 7\8=
д) 3/4 - 1\6
е) 5\6 + 1\9=
ж) 8\25+ 17\20=
з) 4/45 - 1\30 =
и) 17\18 11\12 =
к) 11\15 + 5\12=
л) 1\3+ 1\6 =
м) 3\4 - 2/5=
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