Question

Помогите найти значение выражения

Answer 1

Пошаговое объяснение:

1)

$( \frac{6 \times 3}{7 \times 3} - \frac{1 \times 7}{3 \times 7} ) \times 42 = ( \frac{18 - 7}{21} ) \times 42 =\frac{11}{21} \times 42 = \frac{11}{21} \times \frac{42}{1} = 11 \times 2 = 22$

2)

$( \frac{5 \times 7}{6 \times 7} - \frac{3 \times 6}{7 \times 6} ) \div \frac{17}{21} = ( \frac{35 - 18}{42} ) \div \frac{17}{21} = \frac{17}{42} \div \frac{17}{21} = \frac{17}{42} \times \frac{21}{17} = \frac{1}{2}$

3)

$( \frac{17 \times 6}{6 \times 8} - \frac{1 \times 3}{16 \times 3} ) \div \frac{11}{48} = ( \frac{102 - 3}{48}) \div \frac{11}{48} = \frac{99}{48} \div \frac{11}{48} = \frac{99}{48} \times \frac{48}{11} = \frac{99}{11} = 9$