Question

Помогите пожалуйста номер 867! Даю 15 баллов

Answer 1

А)5/12-4/12=1/12(1/12+4/12=5/12) б)1/5-3/20=4/20-3/20=1/20(1/20+3/20=4/20. В)7/8-5/12=21/24-10/24=11/24(11/24+10/24=21/24). Г)9/10-1/6=27/30-5/30=22/30(22/30+5/30=27/30

Answer 2

Вот так....................................................$\frac{5}{12}- \frac{1}{3} = \frac{1}{12} \\ \\ \frac{1}{12}+ \frac{1}{3}+ \frac{1}{5} \\ \\ \frac{1}{5}- \frac{3}{20}= \frac{1}{20} \\ \\ \frac{1}{20}+ \frac{3}{20}= \frac{1}{5} \\ \\ \frac{7}{8}- \frac{5}{12}= \frac{11}{24} \\ \\ \frac{11}{24}+ \frac{5}{12}= \frac{7}{8} \\ \\ \frac{9}{10}- \frac{1}{6}= \frac{22}{30} \\ \\ \frac{22}{30}+ \frac{1}{6}= \frac{9}{10}$