-2х+4=-1/3х-21 помогите

Question

-2х+4=-1/3х-21 помогите

Answer 1

6.....................

Answer 2

-2х+1/3х=-21-4
-1 2/3х=-25
-5/3х=-25
х=(-25):(-5/3)
х=(-25)*(-3/5)
х=5*3
х=15