Question

Tìm x, biết: /5x-4/ = /x+2/

giúp mik vs các bn

Answer 1

/5x-4/=/x+2/

5x-4=+-(x+2)

5x-4=x+2

5x-x=2+4

4x=6

x=3/2

+5x-4=-x-2

5x+x=-2+4

6x=2

x=1/3

Answer 2

Mình không chắc đâu

/5x-4/=/x+2/

TH1:5x-4=x+2

4+2=5x-x

6=4x

=>x=1,5

TH2:5x-4=-x+2

4+2=5x+x

6=6x

=>x=1

TH3:-5x-4=x+2

4+2=-5x-x

6=-6x

=>x=-1

Vậy x\(\in\)\(\left\{-1;1;1,5\right\}\)