(1-3m)/2-(2m+5)/3+(3-2m)/4 m=1/10
(1-3m)/2-(2m+5)/3+(3-2m)/4 m=1/10
先化简再求值(1-3m)/2-(2m+5)/3+(3-2m)/4其中 m=1/10
先化简再求值(1-3m)/2-(2m+5)/3+(3-2m)/4其中 m=1/10
赞 tianya_2001 幼苗
共回答了13个问题采纳率：92.3% 举报
先化简再求值(1-3m)/2-(2m+5)/3+(3-2m)/4其中 m=1/10
=(6-18m)/12-(8m+20)/12+(9-6m)/12
=(6-18m-8m-20+9-6m)/12
=(-32m-5)/12
=-(32×1/10+5)/12
=-8.2/12
=-82/120
=-41/60;
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,
=(6-18m)/12-(8m+20)/12+(9-6m)/12
=(6-18m-8m-20+9-6m)/12
=(-32m-5)/12
=-(32×1/10+5)/12
=-8.2/12
=-82/120
=-41/60;
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,
1年前
2
mozhangwei1 幼苗
共回答了263个问题 举报
[(1-3m)/2]-[(2m+5)/3]+[(3-2m)/4]
=(-5-32m)/12
=[-5-32×(1/10)]/12
=-41/60
看起来简单，不小心还是容易算错的。
=(-5-32m)/12
=[-5-32×(1/10)]/12
=-41/60
看起来简单，不小心还是容易算错的。
1年前
2
lelefjl520 幼苗
共回答了2089个问题采纳率：0.1% 举报
先扩大12倍计算简便些，最后除以12就行。
(1-3m)/2-(2m+5)/3+(3-2m)/4
=[12(1-3m)/2-12(2m+5)/3+12(3-2m)/4]÷12
=[6(1-3m)-4(2m+5)+3(3-2m)]÷12
=(6-18m-8m-20+9-6m)÷12
=(-32m-5)/12
=-(32m+5)/12
=-(32*1/10+5)/12
=-(16/5+5)/12
=-41/5 /12
=-41/60
(1-3m)/2-(2m+5)/3+(3-2m)/4
=[12(1-3m)/2-12(2m+5)/3+12(3-2m)/4]÷12
=[6(1-3m)-4(2m+5)+3(3-2m)]÷12
=(6-18m-8m-20+9-6m)÷12
=(-32m-5)/12
=-(32m+5)/12
=-(32*1/10+5)/12
=-(16/5+5)/12
=-41/5 /12
=-41/60
1年前
1
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