Ответ:\(5.6\cdot0.25+3.8:0.4=1.4+9.5=10.9\);\((7.2-4.8)\cdot(0.5+0.15)=2.4\cdot0.65=1.56\);\(12.6:(0.3\cdot1.4)=12.6:0.42=30\).Ответ: 10,9; 1,56; 30.