Question

помогите по математике​

Answer 1

Ответ:

$1 \frac{1}{4} + 1 \frac{7}{8} = 2\frac{2 + 7}{8} = 2 \frac{10}{8 } \\ 5 \frac{5}{12} - 1 \frac{2}{3} = 4 \frac{5 - 8}{12} = 3 \frac{9}{12}$