а.
13х-26= -130
13х= -130+26
13х= -104
х= -104:13
х= -8
б
5х - 3 =3х-11
5х - 3х = -11-3
2х = -14
х = -7
в
24(х+2) = 6(х-4)
24× +48 =6х -24
24х -6х = 24х -48
18х = -72
х = -4
а.
13х-26= -130
13х= -130+26
13х= -104
х= -104:13
х= -8
б
5х - 3 =3х-11
5х - 3х = -11-3
2х = -14
х = -7
в
24(х+2) = 6(х-4)
24× +48 =6х -24
24х -6х = 24х -48
18х = -72
х = -4