Question

Решите пж ДАЮ 20 БАЛОВ 1) (3/4+1/20)×1/2=2)(7/12-13)×16/19=3)7,3/5-2,4/14=4)(11/24+1/6)+ 1,3/5=5)(5,1/2+2,3/5)×5/9=6) (7-2,5/16)×4/25​

Answer 1

Пошаговое объяснение:

1) 31/40

2)83/228

3) 5,11/35

4)1,487/720

5)6,17/18

6)6,63/106

Answer 2

Давайте решим данные математические выражения:

1. $\left(\frac{3}{4} + \frac{1}{20}\right) \times \frac{1}{2}$ $=\left(\frac{15}{20} + \frac{1}{20}\right) \times \frac{1}{2}$ $=\frac{16}{20} \times \frac{1}{2}$ $=\frac{8}{20} = \frac{2}{5}$

2. $\left(\frac{7}{12} - 13\right) \times \frac{16}{19}$ $=\left(\frac{7}{12} - \frac{156}{12}\right) \times \frac{16}{19}$ $=\left(\frac{7 - 156}{12}\right) \times \frac{16}{19}$ $=\left(\frac{-149}{12}\right) \times \frac{16}{19}$ $=-\frac{2984}{228} = -\frac{371}{57}$

3. $\frac{7.3}{5} - \frac{2.4}{14}$ $=\frac{7.3 \times 14}{5 \times 14} - \frac{2.4}{14}$ $=\frac{102.2}{70} - \frac{2.4}{14}$ $=\frac{511}{350} - \frac{12}{70}$ $=\frac{511}{350} - \frac{6}{35}$ $=\frac{511 - 60}{350}$ $=\frac{451}{350} = \frac{90}{70} = \frac{9}{7}$

4. $\left(\frac{11}{24} + \frac{1}{6}\right) + \frac{1.3}{5}$ $=\frac{11}{24} + \frac{4}{24} + \frac{1.3}{5}$ $=\frac{15}{24} + \frac{1.3}{5}$ $=\frac{5}{8} + \frac{1.3}{5}$ $=\frac{5}{8} + \frac{26}{50}$