Б) 1/4х+5/8=3/4
1/4х=6/8-5/8
1/4х=1/8
х=1/8:1/4
х=1/2
г) 2,42х-0,12х=0,02
2,3х=0,02
х=0,02:2,3; х=0,00869565217
х=1/50:23/10
х=1/115
е) 1/9х+11/27=12/27
1/9х=12/27-11/27
1/9х=1/27
х=1/27:1/9
х=1/3
з) х/2+х/4=-3
1/2х+1/4х=-3
2/4х+1/4х=-3
3/4х=-3
х=-3:3/4
х=-4
к) 7/9х-3/4х=5/18
28/36х-27/36х=5/18
1/36х=5/18
х=5/18:1/36
х=10
м) 3/7х-4х=2
3/7х-28/7х=2
-25/7х=2
х=2:(-25/7)
х=-14/25
х=-0,56