简算:1+12/6+36/12+80/20+150/30+252/42+392/56+576/72

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/16 18:30:37
简算:1+12/6+36/12+80/20+150/30+252/42+392/56+576/72简算:1+12/6+36/12+80/20+150/30+252/42+392/56+576/72简算

简算:1+12/6+36/12+80/20+150/30+252/42+392/56+576/72
简算:1+12/6+36/12+80/20+150/30+252/42+392/56+576/72

简算:1+12/6+36/12+80/20+150/30+252/42+392/56+576/72
=1+2+3+4+5+6+7+8=36

1+12/6+36/12+80/20+150/30+252/42+392/56+576/72
=1+2+……7+8=(1+8)*8/2=36

36