Question

Помогите пожалуйста очень срочно нужно​

Answer 1

Пошаговое объяснение:

1.а)$4\frac{5}{6} +2\frac{3}{8} = \frac{29}{6} +\frac{19}{8} = \frac{232+144}{48} = \frac{346}{48} = 7\frac{10}{48} = 7\frac{5}{24}$

б) $7\frac{5}{18} -7\frac{7}{12} = \frac{383}{18} - \frac{91}{12} = \frac{766-273}{36} = \frac{493}{36} = 13\frac{25}{36}$

в)$3\frac{4}{9} +2\frac{2}{7} = \frac{31}{9} +\frac{16}{7} = \frac{217+144}{63} = \frac{361}{63} = 5\frac{46}{63}$

г)$5\frac{3}{14} -1\frac{1}{21}=\frac{73}{14}-\frac{22}{21} = \frac{219-44}{42} = \frac{175}{42}=4\frac{7}{42} = 4\frac{1}{6}$

2.а)$3 + a = \frac{5}{9} => a=\frac{5}{9}-\frac{27}{9} => a = -\frac{22}{9}= -2\frac{4}{9}$

б)$x+2\frac{3}{7} =5\frac{1}{7} => x = \frac{36}{7} -\frac{17}{7} => x = \frac{19}{7}=2\frac{5}{7}$