130*х+2000=67000
130х=67000-2000
130х=65000
х=65000:130
х=500
130*500+2000=67000
9200-(х:60) =10000-2000
9200-(х:60)=8000
х:60=9200-8000
х:60=1200
х=1200х60
х=72000
9200-(72000:60)=10000-2000
130*х+2000=67000
130х=67000-2000
130х=65000
х=65000:130
х=500
130*500+2000=67000
9200-(х:60) =10000-2000
9200-(х:60)=8000
х:60=9200-8000
х:60=1200
х=1200х60
х=72000
9200-(72000:60)=10000-2000