А)7х+11,9=0
7х=-11,9
х=-11,9/7
х=-1,7
б)6х-0,8=3х+2,2
6x – 3x = 2,2 + 0,8
3x = 3
x = 1
в)4-4(х+3)=4(х-5)
4 – 4x – 12 = 4x – 20
– 4x – 4x = – 20 + 12 – 4
-8x = -12
x = 1.5
А)7х+11,9=0
7х=-11,9
х=-11,9/7
х=-1,7
б)6х-0,8=3х+2,2
6x – 3x = 2,2 + 0,8
3x = 3
x = 1
в)4-4(х+3)=4(х-5)
4 – 4x – 12 = 4x – 20
– 4x – 4x = – 20 + 12 – 4
-8x = -12
x = 1.5