Question

помогите решить:
1)123x+458+254+26=1238
2) 2*(6+8)-3х=313
3) 630:(63х-421)+53=68

Answer 1

123х+ 458+254+26=1238
123х+458+254=1238-26
123х+458+254=1212
123х+458=1212-254
123х+458=958
123х=958-458
123х=500
х=500:123
х=4 8/123