Ответ:
- 5 1/6 + 7 1/9 =(- 5 1/6 - 4 1/3)+(7 1/9- 7 1/9)= - 5 1/6 - 5 1/6 - 4 1/3 = - 5 1/6 - 4 2/6= - 9 3/6=9 1/2
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Ответ:
- 5 1/6 + 7 1/9 =(- 5 1/6 - 4 1/3)+(7 1/9- 7 1/9)= - 5 1/6 - 5 1/6 - 4 1/3 = - 5 1/6 - 4 2/6= - 9 3/6=9 1/2