Question

Виконайте дії: а) 5 7/24 + 7 5/24 б) 12 6/7 - 5 3/7 в) 15 8/9 -9 9/10 + 6 3/10 г) 17 8/13 - 8 9/13 +5 5/13​

Answer 1

а)

$5 \frac{7}{24} + 7 \frac{5}{24} = 12 \frac{12}{24} = 12 \frac{1}{2}$

б)

$12 \frac{6}{7} - 5 \frac{3}{7} = 7 \frac{3}{7}$

в)

$15 \frac{8}{9} - 9 \frac{9}{10 } + 6 \frac{3}{10} = 15 \frac{8}{9} - 3 \frac{6}{10}$

$15 \frac{8}{9} - 3 \frac{6}{10} = 15 \frac{80}{90} - 3 \frac{54}{90} = 12 \frac{26}{90} = 12 \frac{13}{45}$

г)

$17 \frac{8}{13} - 8 \frac{9}{13} + 5 \frac{5}{13} = 17 \frac{8}{13} - 3 \frac{4}{13} = 14 \frac{4}{13}$