15 · (1 + 1/3 - 1/5) = 17
1) 1 + 1/3 = 1 целая 1/3 = 4/3
2) 4/3 - 1/5 = 20/15 - 3/15 = 17/15
3) 15 · 17/15 = 17
Ответ: 17.
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15 · (1 + 1/3 - 1/5) = 17
1) 1 + 1/3 = 1 целая 1/3 = 4/3
2) 4/3 - 1/5 = 20/15 - 3/15 = 17/15
3) 15 · 17/15 = 17
Ответ: 17.