Решите уравнение x-1/2=3/4x
Х - 1/2 = 3/4х, х - 3/4х = 1/2, 1/4х = 1/2, х = 1/2 : 1/4, х = 1/2 * 4/1, х = 2, Проверка: 2 - 1/2 = 3/4*2, 2 - 1/2 = 6/4, 1 1/2 = 1 1/2