Question

( 2 5/7 + 1 5/3) :4/7​

Answer 1

Пошаговое объяснение:

(2 5/7+1 5/3):4/7=(19/7+8/3):4/7=

=((57+56)/21)×7/4=113/21×7/4=113/12=

=9 5/12

Answer 2

Ответ:

$(2\frac{5}{7}+1\frac{5}{3}):\frac{4}{7}=( \frac{19}{7}+\frac{8}{3}):\frac{4}{7}= ( \frac{57}{21}+\frac{56}{21})*\frac{7}{4}= \frac{113}{21}*\frac{7}{4}= \frac{113}{3}*\frac{1}{4}=\frac{113}{12}=9\frac{5}{12}$