Question

1) 3 1/3 : 2 6/7
2)5/6 - x = 25
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Answer 1

Ответ:

3 1/3/ 2 6/7= 10/3: 20/7= 10/3*7/20=7/6= 1 1/6

5/6-х=25

х=5/6-25

х=-24 6/6+5/6

х=-24 1/6

Answer 2

Ответ:

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

$\frac{5}{6} - x = 25 \\ x = \frac{5}{6} - 25 \\ x = \frac{5}{6} - \frac{150}{6} \\ x= ( - \frac {145}{6}) \\ x = ( - 24 \frac{1}{6})$