5. Уравнения

Решим уравнения: x + 15 = -6 x = -6 - 15 x = -21 -9 : y = -0,45 y = -9 / (-0,45) y = 20 4x = -12.8 x = -12.8 / 4 x = -3.2 x - 1.8 = -56 x = -56 + 1.8 x = -54.2 x + 14 = -8 x = -8 - 14 x = -22 x - 24 = -12 x = -12 + 24 x = 12 5x = -17,5 x = -17,5 / 5 x = -3.5