Question

Помогите пожалуйста -40×(-7×+5)=-1600​

Answer 1

$- 40 times ( - 7x + 5) = - 1600 \ 280x + ( - 200) = - 1600 \ 280x = - 1600 + 200 \ 280x = - 1400 \ x = - 1400 div 280 \ x = - 5$