1)3x + 5 = 5x - 13
3x - 5x = - 13 - 5 - 2x = 8
x = - 4
2) 4(2 - 3x) = - 2x - 27
8 - 12x = 2x - 27 luego despejo la x a un solo lado y efectuo operacion - 12x - 2x = - 27 - 8 - 14x = - 35
x = 5 / 2
3)6x - 8 = 4 ( - 2x + 5 )
6x - 8 = - 8x + 20
6x + 8x = 20 + 8
14x = 28
x = 2
4)75 - 7(x + 4) = 105 + 6(x + 7) - 8
75 - 7x - 28 = 105 + 6x + 42 - 8 - 7x - 6x = - 75 + 28 + 105 + 42 - 8 - 13x = 92
x = - 92 / 13
5) 3x - (2x - 1) = 7x - (3 - 5x) + ( - x + 24)
3x - 2x + 1 = 7x - 3 + 5x - x + 24
x + 1 = 11x + 21
x - 11x = 21 - 1 - 10x = 20
x = - 2
cordial saludo espero te sirva.