a: 3x+2>-2x+12
=>5x>10
hay x>2
b: 3x-15>=0
=>3x>=15
hay x>=5
c: \(\dfrac{x-1}{4}< \dfrac{2x+8}{3}\)
=>3x-3<8x+32
=>-5x<35
hay x>-7
d: \(2x-6>0\)
=>x-3>0
hay x>3
e: \(\dfrac{2-x}{3}< =\dfrac{3-2x}{5}\)
=>10-5x<=9-6x
=>-5x+6x<=9-10
=>x<=-1
f: 4x+5>=3x+12
=>4x-3x>=12-5
=>x>=7