Question

Выполните действие 15*(1+1/3-1/5

Answer 1

15(1+1/3-1/5)=15(15/15+5/15-3/15)=15*17/15=17

Answer 2

1)1+1/3=1 целая 1/3
2) 1 целая 1/3-1/5=4/3-1/5= 20/15-3/15=17/15=1 целая 2/15
3) 15×1 целую 2/15=15×17/15=17
15×(1+1/3-1/5)=17