5256 5 36.6 6.4 6.22 24:9 八 9.6 130 66 276-216 130-99 216 31

Выполню решение по действиям: 1) $$\frac{25}{36}\cdot 6.4 = \frac{25}{36} \cdot \frac{64}{10} = \frac{25\cdot 64}{36 \cdot 10} = \frac{25\cdot 16}{9 \cdot 10} = \frac{5\cdot 16}{9 \cdot 2} = \frac{5\cdot 8}{9} = \frac{40}{9} = 4 \frac{4}{9}$$ 2) $$\frac{77}{24}:9 = \frac{77}{24} \div \frac{9}{1} = \frac{77}{24} \cdot \frac{1}{9} = \frac{77}{216}$$ 3) $$\frac{4}{9} = \frac{4\cdot 24}{9\cdot 24} = \frac{96}{216}$$ 4) $$4 \frac{96}{216} - \frac{77}{216} = 4 \frac{96-77}{216} = 4 \frac{19}{216}$$ 5) На изображении пример: $$\frac{130}{216} - \frac{99}{216} = \frac{130-99}{216} = \frac{31}{216}$$