б) 3х-11,4=0
3х=11,4
х=11,4/3
х=3,8
в) 4х+5,5=2х-2,5
4x – 2x = – 2,5 – 5,5
2x = -8
x = -4
г) 2х-(6х+1)=9
2x – 6x – 1 = 9
2x – 6x = 9 + 1
-4x = 10
x = -2.5
б) 3х-11,4=0
3х=11,4
х=11,4/3
х=3,8
в) 4х+5,5=2х-2,5
4x – 2x = – 2,5 – 5,5
2x = -8
x = -4
г) 2х-(6х+1)=9
2x – 6x – 1 = 9
2x – 6x = 9 + 1
-4x = 10
x = -2.5