3*х-74000=20000-4000
3х-74000=20000-4000
3х-74000=16000
3х=16000+74000
3х=90000
Х=90000:3
Х=30000
3*х-74000=20000-4000 3*х-74000=16000 3*х=74000+16000 3*х=90000 х=90000:3 х=30000