Question

помогите пожалуйста^^

Answer 1

$- 3 frac{3}{7} x {y}^{2} times frac{7}{12} {x}^{3} {y}^{5} = \ - frac{24}{7} x {y}^{2} times frac{7}{2} {x}^{3} {y}^{5} = \ - 2xy^{2} {x}^{3} {y}^{5} = \ - 2 {x}^{4} {y}^{7}$