Ответ:\(285.7\cdot3.4-6.2\cdot8.4\cdot0.4=971.38-20.832=950.548\).\(100.35-(35.83+2.7)\cdot2.5=100.35-38.53\cdot2.5=100.35-96.325=4.025\).Ответ: 950,548; 4,025.