用简便方法计算:6/7+3/14+4/21
用简便方法计算:6/7+3/14+4/21
6/7+3/14+4/21
=(36+9+8)/42
=53/42
6/7+3/14+4/21用简便方法计算
=12/14+3/14+4/21=15/14+4/21=315/294+64/294=379/294
6/7+3/14+4/21简便运算
6/7+3/14+4/21
=36/42+9/42+8/42
=53/42
=1又11/42
1.75×6/7+3/14×7/4+7/4 的简便方法
1.75×6/7+3/14×7/4+7/4
=7/4﹙6/7+3/14+1﹚
=7/4×29/14
=29/8
6/71×4/5×14用简便方法计算
原式=6X4X14/71X5=336/355(没有简便方法,71若是70,可先约分。)
简便计算:(6/7+3/4)+(2/7-4/11)-(3/4+7/11)
(6/7+3/4)+(2/7-4/11)-(3/4+7/11)
=6/7+3/4+2/7-4/11-3/4-7/11
=(6/7+2/7)+(3/4-3/4)-(4/11+7/11)
=8/7+0-1
=1/7
3/5*6/7+3/50*10/7用简便方法怎样算
(3*6)/(5*7)+(3*10)/(50*7) = (18+3)/(5*7) = (3*7)/(5*7) = 3/5
简便方法计算:6÷6/7—6/7÷6
解:6÷6/7—6/7÷6
=6×7/6-6/7×1/6
=7-1/7
=48/7
6÷6/7与6/7÷6互为倒数的, 后一个6/7÷6可以直接由6÷6/7算得
祝你开心
(6/11+2/7+8/9)/(1/7+3/11+4/9) 要简便方法计算 要过程
把分子提取2,则可约分为2
(6/11+2/7+8/9)/(1/7+3/11+4/9)
=2×(1/7+3/11+4/9﹚)/(1/7+3/11+4/9)
=2
18÷6/7-(1/4+2/7)×14/9 简便方法计算
解:原式=18*7/6-(7/28+8/28)*14/9
=18*7/6-15/28*14/9
=21-5/6
=20又1/6