Question

Пж помогите ｡◕‿◕｡пж пж пж пж пж

Answer 1

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