1、(7/9-5/6+3/4-7/18)*36 2、[1又2/3-(1/3-1/6+5/12)*2.4]*53、2又13/14*(-7) 4、(-5)*(-3又6/7)+(-7)*(-36/7)-(-12)*(-3又6/7)5、(1-1/2)*(1-1/3)*(1-1/4)*.*(1-1/2012)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 22:34:59
![1、(7/9-5/6+3/4-7/18)*36 2、[1又2/3-(1/3-1/6+5/12)*2.4]*53、2又13/14*(-7) 4、(-5)*(-3又6/7)+(-7)*(-36/7)-(-12)*(-3又6/7)5、(1-1/2)*(1-1/3)*(1-1/4)*.*(1-1/2012)](/uploads/image/z/1057945-49-5.jpg?t=1%E3%80%81%EF%BC%887%2F9-5%2F6%2B3%2F4-7%2F18%EF%BC%89%2A36+2%E3%80%81%5B1%E5%8F%882%2F3-%EF%BC%881%2F3-1%2F6%2B5%2F12%EF%BC%89%2A2.4%5D%2A53%E3%80%812%E5%8F%8813%2F14%2A%EF%BC%88-7%EF%BC%89+4%E3%80%81%EF%BC%88-5%EF%BC%89%2A%EF%BC%88-3%E5%8F%886%2F7%EF%BC%89%2B%EF%BC%88-7%EF%BC%89%2A%EF%BC%88-36%2F7%EF%BC%89-%EF%BC%88-12%EF%BC%89%2A%EF%BC%88-3%E5%8F%886%2F7%EF%BC%895%E3%80%81%EF%BC%881-1%2F2%EF%BC%89%2A%EF%BC%881-1%2F3%EF%BC%89%2A%EF%BC%881-1%2F4%EF%BC%89%2A.%2A%EF%BC%881-1%2F2012%EF%BC%89)
1、(7/9-5/6+3/4-7/18)*36 2、[1又2/3-(1/3-1/6+5/12)*2.4]*53、2又13/14*(-7) 4、(-5)*(-3又6/7)+(-7)*(-36/7)-(-12)*(-3又6/7)5、(1-1/2)*(1-1/3)*(1-1/4)*.*(1-1/2012)
1、(7/9-5/6+3/4-7/18)*36 2、[1又2/3-(1/3-1/6+5/12)*2.4]*5
3、2又13/14*(-7) 4、(-5)*(-3又6/7)+(-7)*(-36/7)-(-12)*(-3又6/7)
5、(1-1/2)*(1-1/3)*(1-1/4)*.*(1-1/2012)
1、(7/9-5/6+3/4-7/18)*36 2、[1又2/3-(1/3-1/6+5/12)*2.4]*53、2又13/14*(-7) 4、(-5)*(-3又6/7)+(-7)*(-36/7)-(-12)*(-3又6/7)5、(1-1/2)*(1-1/3)*(1-1/4)*.*(1-1/2012)
(7/9-5/6+3/4-7/18)*36=(7/18-1/12)*36=14-3=11
2、[1又2/3-(1/3-1/6+5/12)*2.4]*5=[5/3-(1/6+12/5)*12/5]*5
==[5/3-(2/5+1)]*5=25/3-7=4/3
2又13/14*(-7)=-41/14 * 7=82
4、(-5)*(-3又6/7)+(-7)*(-36/7)-(-12)*(-3又6/7)
=(5-12)*(28/7)+7*(36/7)
=7*(-28/7+36/7)
=9
5、(1-1/2)*(1-1/3)*(1-1/4)*.*(1-1/2012)
=1/2*2/3*3/4*.*2011/2012
=1/2012
1.原式=(28/36-30/36+27/36-13/36)*36
=(12/36)*36
=12
2.原式=[5/3-(4/12-2/12+5/12)*2.4]*5
=[5/3-(7/12)*(24/10)]*5
=(5/3-14/10)*5
=(5...
全部展开
1.原式=(28/36-30/36+27/36-13/36)*36
=(12/36)*36
=12
2.原式=[5/3-(4/12-2/12+5/12)*2.4]*5
=[5/3-(7/12)*(24/10)]*5
=(5/3-14/10)*5
=(50/30-42/30)*5
=(8/30)*5
=8/6=4/3=1又1/4
3.原式=(41/14)*(-7)= - 41/2= -20又1/2
4原式=(-5)*(-27/7)+36-(-12)*(-27/7)
=5*(27/7)+36-12*(27/7)
=36+ (5-12)(27/7)=36+(-7)*(27/7)=36-27=9
收起