реши уравнение x-1 2/7=4x+2 5/14

х - 1 2/7 = 4х + 2 5/14х - 4х = 2 5/14 + 1 2/7- 3х = 2 5/14 + 1 4/14- 3х = 3 9/14- 3х = 51/14х = 51/14 : (-3)х = 51/14 * (-1/3)х = - 17/14х = - 1 3/14-----------------------------------Проверка:- 1 3/14 - 1 4/14 = 4 * (-1 3/14) + 2 5/14- 2 7/14 = - 4 12/14 + 2 5/14- 2 7/14 = - 2 7/14