Ответ:
1/5-2/15+1/30=-1/30
1)2/15+1/30=4/30+1/30=5/30=1/6
2)1/5-1/6=-1/30
79/80-3/16+39/80=2 9/80
1)79/80+39/80=118/80=1 38/80= 1 5/8
2)13/8+39/80=130/80+39/80=169/80=2 9/80
Пошаговое объяснение:
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Ответ:
1/5-2/15+1/30=-1/30
1)2/15+1/30=4/30+1/30=5/30=1/6
2)1/5-1/6=-1/30
79/80-3/16+39/80=2 9/80
1)79/80+39/80=118/80=1 38/80= 1 5/8
2)13/8+39/80=130/80+39/80=169/80=2 9/80
Пошаговое объяснение: