Question

5 2/7 * 1 1/4+5 2/7*1 3/4

Answer 1

Ответ:

Пошаговое объяснение:

5 2/7 * 1 1/4+5 2/7*1 3/4=5 2/7*(1 1/4+1 3/4)=

37/7*3=111/7=15 6/7

Answer 2

$\displaystyle 5\frac{2}{7}*1\frac{1}{4}+5\frac{2}{7}*1\frac{3}{4}=\frac{37}{7}*\frac{5}{4}+\frac{37}{7}*\frac{7}{4}=\frac{185}{28}+37*\frac{1}{4}=\frac{185}{28}+\frac{37}{4}=\frac{111}{7}=15\frac{6}{7}$