Question

допоможіть будь ласка ​

Answer 1

Ответ:

1)

$\frac{11}{15}$

2)

$\frac{1}{15}$

Пошаговое объяснение:

1)

$\frac{1}{3} + 0.4 = \frac{1}{3} + \frac{4}{10} = \\ = \frac{1 \times 10 + 4 \times 3}{3 \times 10} = \\ = \frac{10 + 12}{30} = \\ = \frac{22}{30} = \\ = \frac{11}{15}$

2)

$0.6 - \frac{8}{15} = \frac{6}{10} - \frac{8}{15} = \\ = \frac{6 \times 15 - 8 \times 10}{10 \times 15} = \\ = \frac{90 - 80}{150} = \\ = \frac{10}{150} = \frac{1}{15}$