Ответ:
3 1/6+(-2 5/9)-(-1 7/12)=3 1/6-2 5/9+1 7/12=19/6-23/9+19/12=19*6-23*4+19*3/36=114-92+57/36=79/36=2 7/36
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Ответ:
3 1/6+(-2 5/9)-(-1 7/12)=3 1/6-2 5/9+1 7/12=19/6-23/9+19/12=19*6-23*4+19*3/36=114-92+57/36=79/36=2 7/36