Ответ:
(11 7/5 + х)=6 8/15 + 8 7/15
11 7/5+х=14 15/15
11 7/5+х=15
х=15-11 7/5
х=13 10/5-11 7/5
х=2 3/5
.... Хз... 1234456778
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Ответ:
(11 7/5 + х)=6 8/15 + 8 7/15
11 7/5+х=14 15/15
11 7/5+х=15
х=15-11 7/5
х=13 10/5-11 7/5
х=2 3/5
.... Хз... 1234456778