23. Тип 8 № 13002 Решите уравнение: 7x - 15 = 4x - 3(x - 3).

23. $7x - 15 = 4x - 3(x - 3)$ $7x - 15 = 4x - 3x + 9$ $7x - 15 = x + 9$ $6x = 24$ $x = 4$ 24. $(4x - 6) - (9x - 4) = 18$ $4x - 6 - 9x + 4 = 18$ $-5x - 2 = 18$ $-5x = 20$ $x = -4$ 25. $x - 5(x + 3) = 5$ $x - 5x - 15 = 5$ $-4x = 20$ $x = -5$ 26. $3(5x + 8) - 7x = 6x$ $15x + 24 - 7x = 6x$ $8x + 24 = 6x$ $2x = -24$ $x = -12$ 27. $6x - 8 = 5x - 3(x - 4)$ $6x - 8 = 5x - 3x + 12$ $6x - 8 = 2x + 12$ $4x = 20$ $x = 5$ 28. $2(4x - 5) - 14 - 3x = 6$ $8x - 10 - 14 - 3x = 6$ $5x - 24 = 6$ $5x = 30$ $x = 6$ 29. $5(x - 4,4) = 9x$ $5x - 22 = 9x$ $-4x = 22$ $x = -5,5$ 30. $1 - 4(5 + 2x) = 13$ $1 - 20 - 8x = 13$ $-19 - 8x = 13$ $-8x = 32$ $x = -4$ 31. $10 - 5(2x - 1) = 7$ $10 - 10x + 5 = 7$ $15 - 10x = 7$ $-10x = -8$ $x = 0,8$ 32. $5 + 2x = 3(2x - 5) - 8$ $5 + 2x = 6x - 15 - 8$ $5 + 2x = 6x - 23$ $-4x = -28$ $x = 7$ 33. $5(x - 3,6) = 9x$ $5x - 18 = 9x$ $-4x = 18$ $x = -4,5$ 34. $5(x - 2,4) = 13x$ $5x - 12 = 13x$ $-8x = 12$ $x = -1,5$