Задача Задача №589690
А
А
7x-5(2x+1)=5x+15 7x - 10x - 5 = 5x + 15 -3x - 5 = 5x + 15 -3x - 5 = 5x + 15 -3x - 10x = 15 + 5 -13x = 20 x = -20/13 Ответ: x = -20/13.
7x-5(2x+1)=5x+15 7x - 10x - 5 = 5x + 15 -3x - 5 = 5x + 15 -3x - 5 = 5x + 15 -3x - 10x = 15 + 5 -13x = 20 x = -20/13 Ответ: x = -20/13.
