iosiffinikov 2 4/7 / (0.5х - 23/35) = 7,5
18/7 = 75/10 * (5/10 х - 23/35)
18/7 = 15/4 х - 345/70
15/4 х = -18/7 - 345/70
15/4 х = - 180/70 - 345/70
15/4 х = - 525 /70
х = -525/70 / 15/4
х = - 2

GlebGor1998

Verified answer

18/7=7,5*(0,5х-23/35)
6=2,5*(3,5х-4,6)
1,2=0,5*(3,5х-4,6)
2,4+4,6=3,5х
7=3,5х
х=2