1+13/6+37/12+81/20+151/30+253/42+393/56+577/72【简算】

来源：学生作业帮编辑：百度作业网作业帮分类：数学作业时间：2024/05/02 20:46:20

1+13/6+37/12+81/20+151/30+253/42+393/56+577/72
=1+2+1/6+3+1/12+4+1/20+5+1/30+6+1/42+7+1/56+8+1/72
=1+2+3+4+5+6+7+8+9+1/6+1/12+1/20+1/30+1/42+1/56+1/72
=(1+9)x9÷2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+1/7*8+1/8*9
=45+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8+1/8-1/9
=45+1/2-1/9
=45+7/18
=45又7/18

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再问： 1+2+3+4+5+6+7+8+9中9哪来的
再答：哦，写错了 1+13/6+37/12+81/20+151/30+253/42+393/56+577/72 =1+2+1/6+3+1/12+4+1/20+5+1/30+6+1/42+7+1/56+8+1/72 =1+2+3+4+5+6+7+8+1/6+1/12+1/20+1/30+1/42+1/56+1/72 =(1+8)x8÷2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+1/7*8+1/8*9 =36+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8+1/8-1/9 =36+1/2-1/9 =36+7/18 =36又7/18

1+13/6+37/12+81/20+151/30+253/42+393/56+577/72【简算】 3/2+13/6+37/12+81/20+151/30+253/42+393/56+577/72+730/81+1101 3/2+13/6+37/12+81/20+151/30+253/42+393/56+577/72等于几 3+13/6+37/12+81/20+151/30+253/42+393/56+577/72+811/90怎样简算? 3/2+13/6+37/12+81/20+151/30+253/42+393/56 3/2-17/6+37/12-99/20+151/30-293/42+393/56-647/72+811/90等于多少, 1-6/5+12/7-20/9+30/11-42/13+56/15-72/17+90/19简算（答得好给悬赏）3/2+13/6+37/12+85/20+151/30+252/42+392/56 1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90简算 1/6+1/12+1/20+1/30+1/42+1/56++1/72+1/81+1/90 简算：1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90 简算1-6分之5+12分之7-20分之9+30分之11-42分之13+56分之15-72分之17