Ответ:
3/13+6/13=9/13
9/13+2=2 9/13
2 9/13-1/3 = 2 14/39
2 14/39+ 1/2=2 28/78+39/78=37/78
37/78+1/5=2 263/390
2 263/390+1=3 263/390
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Ответ:
3/13+6/13=9/13
9/13+2=2 9/13
2 9/13-1/3 = 2 14/39
2 14/39+ 1/2=2 28/78+39/78=37/78
37/78+1/5=2 263/390
2 263/390+1=3 263/390