Ответ:\(99-3\cdot(18+12)\cdot5+24:4=99-3\cdot30\cdot5+6=99-450+6=-345\).\(63:9+(54-47)\cdot6=7+7\cdot6=49\).\((14+3\cdot7):7+37=(14+21):7+37=35:7+37=42\).\(48:8+(65-50)\cdot5=6+15\cdot5=81\).Ответ: −345; 49; 42; 81.