Question

(12 1/4+1/2)+(11 4/5-7)

Answer 1

Ответ:

Пошаговое объяснение:

12 1/4+1/2=12 1/4+2/4=12 3/4

11 4/5-7=4 4/5

12 3/4+4 4/5=12 15/20+4 16/20=

17 11/20

Answer 2

$12 \frac{1}{4} + \frac{1}{2} = 12 \frac{1}{4} + \frac{2}{4} = 12 \frac{3}{4} \\ 11 \frac{4}{5} - 7 = 4 \frac{4}{5} \\ 12 \frac{3}{4} + 4 \ \frac{4}{5} = 12 \frac{15}{20} + 4 \frac{16}{20} = 17 \frac{11}{20}$