помогите б)3'5x+2'2x=4'56
в)3'y-2'7y=0'6
в)3'7z-z=0'54

б)3'5x+2'2x=4'565,7x=4,56x=4,56:5,7x=0,8========== в)3'y-2'7y=0'60,3y=0,6y=0,6:0,3y=2======== в)3'7z-z=0'54 2,7z=0,54z=0,54:2,7z=0,2===========