Решите уравнения: 6х = -30 7х + 9 = 3х -7 14+5х = 0
6x = -30 x = -5 7x + 9 = 3x - 7 4x = -16 x = -4 14 + 5x = 0 5x = -14 x = -14/5 = -2.8