а)– (51\6 – 5\6) – (31\6 – 1\6) =
б) (3\4 – 2\15) – (1\15 + 1\4) =
в)– (3\8 – 5\7) + (7\8 – 5\7) =
\-это дробь
б) (3\4 – 2\15) – (1\15 + 1\4) =
в)– (3\8 – 5\7) + (7\8 – 5\7) =
\-это дробь
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Answers & Comments
(3\4 – 2\15) – (1\15 + 1\4) =37\60-19\60=3\10
– (3\8 – 5\7) + (7\8 – 5\7)=19\56+9\56=1\2