Question

решите уравнения!!!!

Answer 1

Здравствуйте!
A).
$x \div 12 \times 5 = 40 \\ x \div 12 = 40 \div 5 \\ x \div 12 = 8 \\ x = 12 \times 8 \\ x = 96$
Б).
$x \times 5 = 12 \times 40 \\ x \times 5 = 480 \\ x = 480 \div 5 \\ x = 96$
В).
$x + 40 = 12 \times 5 \\ x + 40 = 60 \\ x = 60 - 40 \\ x = 20$
ОТВЕТ: 96; 96; 20