Ответ:
1+1/3=4/3
4/3-1/5=12/15-3/15=9/15
15*9/15=15/1*9/15=9/1=9
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Ответ:
1+1/3=4/3
4/3-1/5=12/15-3/15=9/15
15*9/15=15/1*9/15=9/1=9