Решите уравнение 6 – 4х = 4 – 6(х – 7).
6 - 4х = 4 - 6(х - 7) 6 - 4х = 4 - 6х - 6 *(-7) 6 - 4х = 4 - 6х + 42 6 - 4х = - 6х + 46 -4х + 6х = 46 - 6 2х = 40 х = 40 : 2 х = 20 ------------------------------------ 6 - 4*20 = 4 - 6(20-7) 6 - 80 = 4 - 6 * 13 - 74 = 4 - 78 - 74 = - 74