Question

Выполни действия.
Ответ:
.
проверить ​

Answer 1

$\bigg(2\tt\displaystyle\frac{3}{4}+5\frac{2}{7}+15\frac{27}{28}\bigg)-\frac{13}{19}=23\frac{6}{19}$

$1)~~~2\tt\displaystyle\frac{3}{4}+5\frac{2}{7}=2\frac{3*7}{4*7}+5\frac{2*4}{7*4}=2\frac{21}{28}+5\frac{8}{28}=7\frac{29}{28}=8\frac{1}{28}$

$2)~~~8\tt\displaystyle\frac{1}{28}+15\frac{27}{28}=23\frac{28}{28}=24$

$3)~~~24-\tt\displaystyle\frac{13}{19}=23\frac{19}{19}-\frac{13}{19}=23\frac{6}{19}$