Question

ПОМОГИТЕ С НОМЕРОМ 4,ПОЖАЛУЙСТА!!!

Answer 1

$\frac{(d^{9})^{2} \times ( {d}^{7})^{4} }{ {d}^{35} \times ( {d}^{2})^{5} } = 15 \\ 1)( {d}^{9} )^{2} \times ( {d}^{7} )^{4} = {d}^{18} \times {d}^{28} = {d}^{46} \\ 2) {d}^{35} \times ( {d}^{2} )^{5} = {d}^{35} \times d^{10} = {d}^{45} \\ 3) \frac{ {d}^{46} }{ {d}^{45} } = 15 \\ d = 15$