а) f(x) =- 5x+6 = 17, - 5x = 11, x = - 2,2.
б) -5х+6 = -3, -5х =- 9, х = 1,8.
в) -5х+6 = 0, -5х = -6, х = 1,2.
а) f(x) =- 5x+6 = 17, - 5x = 11, x = - 2,2.
б) -5х+6 = -3, -5х =- 9, х = 1,8.
в) -5х+6 = 0, -5х = -6, х = 1,2.