Question

X-[5+2x-(6-9x)]=30x+[-(3x+12)-(x+3)]

Answer 1

X-[5+2x-(6-9x)]=30x+[-(3x+12)-(x+3)]
X-[5+2x- 6 + 9x]=30x+[- 3x - 12 - x - 3]
X-[- 1 + 11x]=30x+[- 4x - 15]
x + 1 - 11x = 30x - 4x - 15
x - 11x -30x + 4x = - 15 - 1
5x - 41x = - 16
- 36x = - 16
x = -16 / -36
x = 0,44. O' x - 0,44 = 0
Espero que te sirva está respuesta