Question

(11/3+12/7) ×10,5=
Решение

Answer 1

Ответ:

$56,5.$

Объяснение:

$(\frac{11}{3} + \frac{12}{7}) * 10,5 =56,5\\\\1) \frac{11^{/7} }{3} + \frac{12^{/3} }{7} = \frac{77}{21} + \frac{36}{21} = \frac{77+36}{21} = \frac{113}{21}\\\\2) \frac{113}{21} * 10,5 = \frac{113}{21} * 10\frac{5}{10} = \frac{113}{21} * 10\frac{1}{2} = \frac{113}{21} * \frac{21}{2} = \frac{113}{2} = 56\frac{1}{2} = 56,5$