(7-4х)-(3х+2)=12 помогите
7-4x -3x-2 = 12 5 - 7x = 12 -7х = 12 - 5 -7х = 7 Х = 7 : (-7) Х = -1 ————-
(7-4х)-(3х+2)=12
7-4х-3х-2=12
-4х-3х=12-7+2
-7х=7
х=7/(-7)
х = -1
Ответ: -1