Ответ:\(20+18-30=38-30=8\).\(70-56+16=14+16=30\).\(85-80+67=5+67=72\).\(92-72+35=20+35=55\).\(100-(28+14)=100-42=58\).\(100-(49+21)=100-70=30\).Ответ: 8; 30; 72; 55; 58; 30.