1 1/2×1 1/3×1 1/4×1 1/5×1 1/6-1/2

Question

1 1/2×1 1/3×1 1/4×1 1/5×1 1/6-1/2

Answer 1

1 1/2·1 1/3·1 1/4·1 1/5·1 1/6-1/2=0
1) 3/2·4/3·5/4·6/5·7/6=7/2
2) 7/2-1/2=7-1/2=6/2
6/2(значит 6:2)
6/2=3
ответ:3