Question

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

Answer 1

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