Question

cac bn giai giup mik vs

Answer 1

Tách ra vài câu thôi cậu .

Answer 2

8:

a: \(\Leftrightarrow x\cdot\dfrac{3}{4}-\dfrac{1}{4}-2x+6-\dfrac{1}{4}x=0\)

=>-3/2x+23/4=0

=>-3/2x=-23/4

=>x=23/4:3/2=23/4*2/3=46/12=23/6

b: =>-0,7x=1/3-5/6=2/6-5/6=-3/6=-0,5

=>x=5/7

c: =>2x-1=0 hoặc 3x+12=0

=>x=-4 hoặc x=1/2

d: =>3*2^2x+1=24

=>2^2x+1=8

=>2x+1=3

=>x=1