a)-4x+8=0
⇔-4x=-8
⇔x=2
Vậy S=\(\left\{2\right\}\)
b) 12x-3=-5x+48
⇔12x+5x=48+3
⇔17x = 51
⇔ x= 3
Vậy S=\(\left\{3\right\}\)
e: =>2x(x-3)-(x-3)=0
=>(x-3)(2x-1)=0
=>x=3 hoặc x=1/2
g: =>2x-2-15/2+10x=1
=>12x-19/2=1
=>12x=21/2
=>x=21/24=7/8
h: =(3x-1)(3x+1+x+2)=0
=>(3x-1)(4x+3)=0
=>x=1/3 hoặc x=-3/4
i: =>7-x+3=6-8x
=>-x+10=6-8x
=>7x=-4
=>x=-4/7
m: =>x^2+3x-x^2+5x=16
=>8x=16
=>x=2
k: =>(x+4)(x-3)=0
=>x=-4 hoặc x=3
h: =>(x-3)(x-1)=0
=>x=3 hoặc x=1