Question

Пж помогите ｡◕‿◕｡пж пж пж пж пж

Answer 1

$-dfrac{15}{8}cdotdfrac{2}{5}-dfrac{21}{8}div(-7)=-dfrac{3}{4}+dfrac{21}{8}cdotdfrac{1}{7}=-dfrac{3}{4}+dfrac{3}{8}=-dfrac{3}{8}$