51. Тип 8 № 13030 Решите уравнение: 5(1-2x) - 9 + 3x = 24.

Привет! Давай решим эти линейные уравнения. Для решения будем раскрывать скобки, переносить слагаемые с переменной в одну сторону, а числа — в другую. 51. $5(1-2x) - 9 + 3x = 24$ $5 - 10x - 9 + 3x = 24$ $-7x - 4 = 24$ $-7x = 28$ $x = -4$ 52. $18 - 7x = 10 - 3(x + 4)$ $18 - 7x = 10 - 3x - 12$ $18 - 7x = -2 - 3x$ $20 = 4x$ $x = 5$ 53. $5(x-3) + 7 - 2x = 16$ $5x - 15 + 7 - 2x = 16$ $3x - 8 = 16$ $3x = 24$ $x = 8$ 54. $2(4 + 3x) = -x - 13$ $8 + 6x = -x - 13$ $7x = -21$ $x = -3$ 55. $5x + 3(2 - 3x) + 2x + 9 = 0$ $5x + 6 - 9x + 2x + 9 = 0$ $-2x + 15 = 0$ $2x = 15$ $x = 7,5$ 56. $4(2x - 5) - 11 = 4x - 4$ $8x - 20 - 11 = 4x - 4$ $8x - 31 = 4x - 4$ $4x = 27$ $x = 6,75$ 57. $5 + 2(3 - x) = 1$ $5 + 6 - 2x = 1$ $11 - 2x = 1$ $2x = 10$ $x = 5$ 58. $7 - 5(7 - 2x) = 6x - 4$ $7 - 35 + 10x = 6x - 4$ $-28 + 10x = 6x - 4$ $4x = 24$ $x = 6$ 59. $2 + 4(5 - 2x) = 8$ $2 + 20 - 8x = 8$ $22 - 8x = 8$ $8x = 14$ $x = 1,75$ 60. $4(3 - 4x) - 3 = 5$ $12 - 16x - 3 = 5$ $9 - 16x = 5$ $16x = 4$ $x = 0,25$ 61. $4(5x - 7) - 3 = 9x - 9$ $20x - 28 - 3 = 9x - 9$ $20x - 31 = 9x - 9$ $11x = 22$ $x = 2$ 62. $3(8 + x) - 6x = 3$ $24 + 3x - 6x = 3$ $24 - 3x = 3$ $3x = 21$ $x = 7$ 63. $2 - 5(x - 8) = x - 3$ $2 - 5x + 40 = x - 3$ $42 - 5x = x - 3$ $6x = 45$ $x = 7,5$ 64. $4(x + 2) = 17$ $4x + 8 = 17$ $4x = 9$ $x = 2,25$ 65. $10x - 31 + 9 = 0$ $10x - 22 = 0$ $10x = 22$ $x = 2,2$