数学题:列出算式,要写出过程。
8又5分之1-2又2分1*3又3分之114*(3分之1+4分之3)1.2*9分之5+2又6分之12又6分之1-3分之2*1又8分之1...
8又5分之1-2又2分1*3又3分之1
14*(3分之1+4分之3)
1.2*9分之5+2又6分之1
2又6分之1-3分之2*1又8分之1 展开
14*(3分之1+4分之3)
1.2*9分之5+2又6分之1
2又6分之1-3分之2*1又8分之1 展开
2个回答
展开全部
8又5分之1-2又2分1*3又3分之1
=(8+1/5)-(2+1/2)(3+1/3)
=41/5-(5/2)(10/3)
=41/5-25/3
=123/15-125/15
=-2/15
14*(3分之1+4分之3)
=14(1/3+3/4)
=14(4/12+9/12)
=14(13/12)
=7/(13/6)
=91/6
=15又1/6
1.2*9分之5+2又6分之1
=(6/5)(5/9)+(2+1/6)
=2/3+2+1/6
=4/6+2+1/6
=2+5/6
=2又5/6
2又6分之1-3分之2*1又8分之1
=(2+1/6)-(2/3)(1+1/8)
=(2+1/6)-(2/3)(9/8)
=(13/6)-(3/4)
=26/12-9/12
=17/12
=1又5/12
=(8+1/5)-(2+1/2)(3+1/3)
=41/5-(5/2)(10/3)
=41/5-25/3
=123/15-125/15
=-2/15
14*(3分之1+4分之3)
=14(1/3+3/4)
=14(4/12+9/12)
=14(13/12)
=7/(13/6)
=91/6
=15又1/6
1.2*9分之5+2又6分之1
=(6/5)(5/9)+(2+1/6)
=2/3+2+1/6
=4/6+2+1/6
=2+5/6
=2又5/6
2又6分之1-3分之2*1又8分之1
=(2+1/6)-(2/3)(1+1/8)
=(2+1/6)-(2/3)(9/8)
=(13/6)-(3/4)
=26/12-9/12
=17/12
=1又5/12
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询