15.6-5.6×1.2的简便计算方法过程为：15.6-5.6×1.2=(10+5.6)-5.6×1.2=10+(5.6×1-5.6×1.2)=10+5.6×(1-1.2)=10+5.6×(-0.2)=10-1.12=8.88。　　简便...