13.7×8.6+2.4×13.7-13.7 简算
问题描述:
13.7×8.6+2.4×13.7-13.7 简算
答
13.7×8.6+2.4×13.7-13.7=13.7*(8.6+2.4-1) =13.7*10 =137
13.7×8.6+2.4×13.7-13.7 简算
13.7×8.6+2.4×13.7-13.7=13.7*(8.6+2.4-1) =13.7*10 =137