Question

(2\5+13/15)×6 пожалуйста

Answer 1

(2/5 + 13/15) * 6 = (6/15 + 13/15) * 6 = 19/15 * 6 = 114/15 = 7ц. 9/15 = 7ц. 3/5 (или 7,6)

Answer 2

$( \frac{2}{5}+ \frac{13}{15})\cdot6=( \frac{6}{15}+ \frac{13}{15})\cdot6=( \frac{19}{15})\cdot6= ( \frac{19}{3\cdot 5})\cdot 3 \cdot 2= \frac{38}{5}=7,6$