Question

ПЖ помогите. Сделаю лучшим ответом. Пж​

Answer 1

Ответ:

a) $4\frac{13}{17}$, б) $7\frac{13}{21}$, в) $25\frac{11}{12}$, г) $16\frac{5}{6}$, д) $8$, е) $12\frac{10}{19}$

Пошаговое объяснение:

$1)\ 4\frac{5}{17} + \frac{8}{17} = 4 + \frac{5}{17} + \frac{8}{17} = 4 + \frac{5 + 8}{17} =4 + \frac{13}{17} = 4 \frac{13}{17} \\\\2)\ 3\frac{5}{21} + 4\frac{8}{21} = 3+\frac{5}{21} + 4+\frac{8}{21} = 3 + 4 +\frac{5}{21} + \frac{8}{21} = 7 + \frac{5+8}{21} = 7 + \frac{13}{21} = 7 \frac{13}{21}\\\\3)\ 13 + 12 \frac{11}{12} = 13 + 12 +\frac{11}{12} = 25+\frac{11}{12} = 25\frac{11}{12} \\\\4) 9\frac{5}{6} + 7 = 9 + \frac{5}{6} + 7=9+7+\frac{5}{6} =16+\frac{5}{6} =16\frac{5}{6}$

$5)\ 3\frac{12}{23} +4\frac{11}{23} = 3 + \frac{12}{23} + 4 + \frac{11}{23} = 3+4+\frac{12}{23} +\frac{11}{23} = 7 + \frac{12+11}{23} = 7+ \frac{23}{23} = 7 + 1= 8\\\\6)\ 7\frac{15}{19} + 4\frac{14}{19} = 7 + \frac{15}{19} + 4 + \frac{14}{19} = 7+4+\frac{15}{19} +\frac{14}{19} = 11 + \frac{15+14}{19} = 11 + \frac{29}{19} =\\\\= 11 + \frac{19 + 10}{19} = 11 + 1\frac{10}{19} = 11 + 1 + \frac{10}{19} = 12 + \frac{10}{19} =12\frac{10}{19}$