39. Решите уравнение: 2x - 3(x + 3) = -5.

39. 2x - 3x - 9 = -5 => -x = 4 => x = -4 40. 20 - 10x + 11x = -3x => 20 + x = -3x => 4x = -20 => x = -5 41. 19 + x = 4x - 12 + 7 => 19 + x = 4x - 5 => 24 = 3x => x = 8 42. 56 + 16x - 3x = 6x => 56 + 13x = 6x => 7x = -56 => x = -8 43. 18x + 6 - 3x = 11x => 15x + 6 = 11x => 4x = -6 => x = -1.5 44. 11 - 5x = 6 - 8x - 16 => 11 - 5x = -10 - 8x => 3x = -21 => x = -7 45. 7x - 8 - 2x + 5 = 17 => 5x - 3 = 17 => 5x = 20 => x = 4 46. 2 - 8x - 12 + 3x = 15 => -5x - 10 = 15 => -5x = 25 => x = -5 47. 8x - 18 = 6x - 2x + 10 => 8x - 18 = 4x + 10 => 4x = 28 => x = 7 51. 18 - 7x = 10 - 3x - 12 => 18 - 7x = -3x - 2 => 20 = 4x => x = 5 52. 5x - 15 + 7 - 2x = 16 => 3x - 8 = 16 => 3x = 24 => x = 8 53. 8 + 6x = -x - 13 => 7x = -21 => x = -3 54. 8x - 4 = 9x - 4x + 14 => 8x - 4 = 5x + 14 => 3x = 18 => x = 6 55. x - 4x - 8 = 13 => -3x = 21 => x = -7 56. 20 + x = 9 - 6x - 24 => 20 + x = -6x - 15 => 7x = -35 => x = -5 57. 12x + 56 - 3x = x => 9x + 56 = x => 8x = -56 => x = -7 58. 15 - 32 + 4x = 5 => 4x - 17 = 5 => 4x = 22 => x = 5.5 59. -5x = 15 - 15x + 5 => -5x = 20 - 15x => 10x = 20 => x = 2 60. -4x = 15 - 9x + 15 => -4x = 30 - 9x => 5x = 30 => x = 6