Question

решите уравнения 15+35:×=20. 165-(y+112)=37. y:2-35=3

Answer 1

$15 + 35 \div x = 20 \\ 15 + \frac{35}{x} = 20 \\ \\ \frac{35}{x} = 5 \\ \\ 35 = 5x \\ \\ 5x = 35 \\ \\ x = 7 \\ \\ 165 - (y + 112) = 37 \\ 165 - y - 112 = 37 \\ 53 - y = 37 \\ - y = 37 - 53 \\ - y = - 16 \\ y = 16 \\ \\ y \div 2 - 35 = 3 \\ \frac{y}{2} - 35 = 3 \\ \\ - 70 = 6 \\ \\ y = 6 + 70 \\ \\ y = 76$