Question

пж помогите всё на фото​

Answer 1

$5+2\frac{3}{8}=\frac{5}{1}+\frac{19}{8}=\frac{40}{8}+\frac{19}{8}=\frac{59}{8}= 7\frac{3}{8}\\\\12\frac{8}{15}-12=\frac{188}{1}-\frac{12}{1}=\frac{188}{15}-\frac{180}{15}=\frac{8}{15}\\\\10\frac{4}{3}-7=\frac{34}{3}-\frac{7}{1}=\frac{34}{3}-\frac{21}{3}=\frac{13}{3}=4\frac{1}{3} \\\\4\frac{1}{9} +3\frac{4}{9}=\frac{37}{9}+\frac{31}{9}=\frac{68}{9}= 7\frac{5}{9} \\\\4\frac{1}{6}+10=\frac{25}{6}+\frac{10}{1}=\frac{25}{6} +\frac{60}{6}=\frac{85}{6}= 14\frac{1}{6}$

$7\frac{5}{7}-4\frac{3}{7}=\frac{54}{7}-\frac{31}{7}=\frac{23}{7}= 3\frac{2}{7}$