=1/3+3/4+2/5+5/7+7/8+(1/4+1/5)+(1/3+1/7)+(1/3+1/8)+(1/5+1/7)
=(1/3+1/3+1/3)+(3/4+1/4)+(2/5+1/5+1/5)+(7/8+1/8)+(5/7+1/7+1/7)
=4+4/5
=4.8
=1/3+3/4+2/5+5/7+7/8+(4/20+5/20)+(3/21+7/21)+(3/24+8/24)+(5/35+14/35)
=1/3+3/4+2/5+5/7+7/8+(1/5+1/4)+(1/7+1/3)+(1/8+1/3)+(1/7+2/5)
=1/3*3+(3/4+1/4)+(2/5+1/5+2/5)+(5/7+1/7+1/7)+(7/8+1/8)
=1+1+1+1+1
=5
求过程！！！
追答是321/70
————————
（1/3＋3/4＋7/8＋11/24）＋（2/5＋5/7＋12/35）＋9/20＋10/21＝（8/24＋18/24＋21/24＋11/24）＋（14/35＋25/35＋12/35）＋9/20＋10/21＝58/24＋51/35＋9/20＋10/21＝（29/12＋51/35）＋（9/20＋10/21）＝（925＋625）/420＋（189＋200）/420＝1926/420＝321/70
求过程！！！
计算:1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+12\/35
=(1\/3+1\/3+1\/3)+(3\/4+1\/4)+(2\/5+1\/5+1\/5)+(7\/8+1\/8)+(5\/7+1\/7+1\/7)=4+4\/5 =4.8
计算:1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35=? 计算[(5又1\/4...
1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35=91\/20 [（5又1\/4-4.25）×5\/8]÷3\/8+3.3÷1又5\/6 =52\/15
六年级简便计算:1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35=
六年级简便计算：1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35= 1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35 =1\/3+3\/4+2\/5+5\/7+7\/8+(4\/20+5\/20)+(3\/21+7\/21)+ (3\/24+8\/24)+(5\/35+14\/35) =1\/3+3\/4+2\/5+5\/7+7\/8+1\/5+1\/4+1...
1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+12\/35怎么简算
=1\/3+3\/4+2\/5+5\/7+7\/8+1\/4+1\/5+1\/3+1\/7+1\/3+1\/8+1\/5+1\/7 =4\/5 小学数学简便方法归纳 1、提取公因式：这个方法实际上是运用了乘法分配律，将相同因数提取出来，考试中往往剩下的项相加减，会出现一个整数。2、借来借去法：看到名字，就知道这个方法的含义。用此方法时，需要...
1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+12\/35=
解: 1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+12\/35 =1\/3+3\/4+2\/5+5\/7+7\/8+(1\/4+1\/5)+(1\/3+1\/7)+(1\/3+1\/8)+(1\/5+1\/7)=(1\/3+1\/3+1\/3)+(1\/4+3\/4)+(2\/5+1\/5+1\/5)+(5\/7+1\/7+1\/7)+(7\/8+1\/8)=4+4\/5 =4又4\/5 ...
简算:1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35
1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35 =1\/3+3\/4+2\/5+5\/7+7\/8+(4\/20+5\/20)+(3\/21+7\/21)+ (3\/24+8\/24)+(5\/35+14\/35)=1\/3+3\/4+2\/5+5\/7+7\/8+1\/5+1\/4+1\/7+1\/3+1\/8+1\/3+2\/5+1\/7 =1\/3*3+(3\/4+1\/4)+(2\/5+1\/5+2\/5)+...
3分之1+4分之3+5分之2+7分之5+8分之7+20分之9+21分之10+24分之11+35...
1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+12\/35 =1\/3+3\/4+2\/5+5\/7+7\/8+(1\/4+1\/5)+(1\/3+1\/7)+(1\/3+1\/8)+(1\/5+1\/7)=1\/3+1\/3+1\/3+3\/4+1\/4+2\/5+1\/5+1\/5+5\/7+1\/7+1\/7+7\/8+1\/8 =1+1+4\/5+1+1 =4又5分之4 ...
1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35
1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35 =(1\/3+3\/4+7\/8+11\/24)+(2\/5+9\/20)+(5\/7+10\/21+19\/35)=(8\/24+18\/24+21\/24+11\/24)+(8\/20+9\/20)+(75\/105+50\/105+57\/105)=29\/12+17\/20+26\/15 =145\/60+51\/60+104\/60 =300\/60 =5 ...
1\/2+1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35.。。快点,下午作业...
1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35 =1\/3+3\/4+2\/5+5\/7+7\/8+(4\/20+5\/20)+(3\/21+7\/21)+ (3\/24+8\/24)+(5\/35+14\/35)=1\/3+3\/4+2\/5+5\/7+7\/8+1\/5+1\/4+1\/7+1\/3+1\/8+1\/3+2\/5+1\/7 =1\/3X3+(3\/4+1\/4)+(2\/5+1\/5+2\/5)+(...
1\/3+3\/4+2\/5+5\/7+7\/8+9\/20+10\/21+11\/24+19\/35=
9\/20可以分解成1\/4+1\/5 10\/21可以分解成1\/3+1\/7 11\/24可以分解成1\/3+1\/8 19\/35可以分解成2\/5+1\/7 所以 分母相同的数字相加 结果都是1 一共五组 结果是5 得解
