Question

Даю 30 баллов срочно

Answer 1

1).

$7 \frac{12}{13} - (4 + 2 \frac{3}{5}) = 7 \frac{12(5)}{13(5)} - 6 \frac{3(13)}{5(13)} = 7 \frac{60}{65} - 6 \frac{39}{65} = 1 \frac{21}{65}$

2).

$10 \frac{14}{25} - (8 + 1 \frac{1}{5} ) = 10 \frac{14}{25} - 9 \frac{1(5)}{5(5)} = 10 \frac{14}{25} - 9 \frac{5}{25} = 1 \frac{9}{25}$

3).

$7 - (4 \frac{2(2)}{17(2)} - 2 \frac{3}{34}) = 7 - (4 \frac{4}{34} - 2 \frac{3}{34}) = 7 - 2 \frac{1}{34} = 6 \frac{34}{34} - 2 \frac{1}{34} = 4 \frac{33}{34}$