Question

помогиите пожалуйста​

Answer 1

Ответ:

1) 1/6

2) 9/10

3) 25/4

4) 1/3

Пошаговое объяснение:

1)

2×1/4×1/6 / 2/3×6/7×7/8

1/2×1/6 / 2/3×6/7×7/8

1/2×1/6 / 2/3×6×1/8

1/2×1/6 / 2×2×1/8

1/2×1/6 / 2×1/4

1/2×1/6 / 1/2

1/6

2)

1/3×1/4×1/2 / 5/3×1/3×1/12

1/3×3×1/2 / 5/3×1/3

3×1/2 / 5/3

3×3/10

9/10

3)

5/9×1/6×5/28 / 1/9×1/3×1/9

25/972 / 1/9×1/3×1/9

25/972 / 1/243

25/4

4)

1/5×2/5×1/12 / 1/6×2/5×3/10

1/5×1/5×1/6 / 1/6×2/5×3/10

1/5×1/5×1/6 / 1/3×1/5×3/10

1/5×1/5×1/6 / 1/5×1/10

1/5×1/6 / 1/10

2×1/6

1/3