Question

Номер 999, пожалуйста!

Answer 1

999.
а)$2 frac{13}{30}-(1 frac{1}{10}+frac{1}{5})=2frac{13}{30}-(1frac{1}{10}+ frac{2}{10})=2frac{13}{30}-1 frac{3}{10}=2 frac{13}{30}-1frac{9}{30}=1 frac{2}{15}$

б)$2frac{8}{15}-(1frac{3}{10}+frac{2}{5})=2frac{8}{15}-(1frac{3}{10}+frac{4}{10})=2 frac{8}{15}-1frac{7}{10}=1frac{46}{30}-1frac{21}{30}=frac{5}{6}$


в)$4frac{14}{45}-1frac{7}{15}-frac{3}{5}=2frac{11}{45} \ \ 1) 4frac{14}{45}-1frac{7}{15}= 3 frac{59}{45}-1 frac{21}{45}=2 frac{38}{45} \ \ 2)2 frac{38}{45}-frac{3}{5}= 2frac{38}{45}-frac{27}{45}=2frac{11}{45}$

г)$4 frac{11}{30}-2frac{9}{20}-frac{1}{10}=3frac{82}{60}-2frac{27}{60}- frac{6}{60}=1frac{49}{60}$

Answer 2

Большое спасибо! Здоровья тебе!