Вычислите:
а) $\frac{14}{27} + \frac{2}{27}$;
б) $\frac{11}{35} + \frac{12}{35}$;
в) $\frac{17}{60} + \frac{12}{60}$;
г) $\frac{32}{55} + \frac{23}{55}$;
д) $\frac{5}{33} + \frac{6}{33}$;
е) $\frac{12}{48} + \frac{12}{48}$;
ж) $\frac{8}{99} + \frac{91}{99}$;
з) $\frac{77}{90} + \frac{13}{90}$.
$\frac{14}{27} + \frac{2}{27} = \frac{14 + 2}{27} = \frac{16}{27}$
$\frac{11}{35} + \frac{12}{35} = \frac{11 + 12}{35} = \frac{23}{35}$
$\frac{17}{60} + \frac{12}{60} = \frac{17 + 12}{60} = \frac{29}{60}$
$\frac{32}{55} + \frac{23}{55} = \frac{32 + 23}{55} = \frac{55}{55} = 1$
$\frac{5}{33} + \frac{6}{33} = \frac{5 + 6}{33} = \frac{11}{33} = \frac{1 * 11}{3 * 11} = \frac{1}{3}$
$\frac{12}{48} + \frac{12}{48} = \frac{12 + 12}{48} = \frac{24}{48} = \frac{1 * 24}{2 * 24} = \frac{1}{2}$
$\frac{8}{99} + \frac{91}{99} = \frac{8 + 91}{99} = \frac{99}{99} = 1$
$\frac{77}{90} + \frac{13}{90} = \frac{77 + 13}{90} = \frac{90}{90} = 1$
Пожауйста, оцените решение