Система уравнений у=7х-15 у+1=-6х+12 Помогите решить
Y = 7x-15 y+1 = -6x+12 y-7x = -15 y+6x = 12-1 _ y-7x = -15 y+6x = 11 -13x = -26 x = 2 y+6*2 = 11 y+12 = 11 y = 11-12 y = -1 Ответ : х = -1 ; у = 2.
Y = 7x - 15 7x - 15 + 1 + 6x - 12 = 0 y = 7x - 15 13x - 26 = 0 x = 2 y = 7*2 - 15 = 14 - 15 = - 1 ( 2; - 1)