Question

Помагите помагите помагите помагите

Answer 1

/ - это дробная черта

Пошаговое объяснение:

1) 3 1/3 : 2/3 × 1/5

10/3 × 3/2 × 1/5

5 × 1/5

= 1

2) 4/5 : 2 1/2 : 6

4/5 × 1/2 × 1/2 × 1/6

2/5 × 1/2 × 1/6

1/5 × 1/6

= 1/30

3) 3 1/5 × 5/8 : 2/7

16/5 × 5/8 × 7/2

2 × 7/2

= 7

4) 26 : 3 1/4 × 1/16

26/3 × 1/4 × 1/16

13/3 × 1/2 × 1/16

= 13/96

5) 4 1/8 × 6/11 : 2 1/4

33/8 × 6/11 × 1/2 × 1/4

3/8 × 3 × 1/4

= 9/32

6) 1 1/7 × 3/4 : 3/10

8/7 × 3/4 × 3/10

2/7 × 3 × 3/10

1/7 × 3 × 3/5

= 9/35

Answer 2

$1) 3 \frac{1}{3 } \div \frac{2}{3} \times \frac{1}{5} = \frac{10 \times 3 \times 1}{3 \times 2 \times 5} = 1$

$2) \frac{4}{5} \times 2 \frac{1}{2} \div 6 = \frac{4 \times 5 \times 1}{5 \times 2 \times 6} = \frac{1}{3}$

$3) 3 \frac{1}{5} \times \frac{5}{8} \div \frac{2}{7} = \frac{16 \times 5 \times 7}{5 \times 8 \times 2} = 7$

$4) 26 \div 3\frac{1}{4} \times \frac{1}{16} = \frac{26 \times 4 \times 1}{13 \times 16} = \frac{1}{2}$

$5) 4 \frac{1}{8} \times \frac{6}{11} \div 2 \frac{1}{4} = \frac{33 \times 6 \times 4}{8 \times 11 \times 9} = \frac{3 \times 2 \times 1}{2 \times 1 \times 3 } = 1$

$6) 1 \frac{1}{7} \times \frac{3}{4} \div \frac{3}{10} = \frac{8 \times 3 \times 10}{7 \times 4 \times 3} = \frac{20}{7} = 2 \frac{6}{7}$

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