(105-(25+6х)*4)*30=150
105-(25+6х)*4=150/30 105-(25+6х)*4=5 105-100+24х=5 5+24х=5 24х=0 х=0
(25+6х)*4=100+24х 105-100+6х=5+6х (5+6х)*30=150+18х 150+18х =150 18х=0 х=0