15又7/11-13又3/7+1又4/11-2又4/7
=15又7/11+1又4/11-(13又3/7+2又4/7)
=17-16
=1
1.25乘3.2乘0.25
=1.25*8*4*0.25
=10*1
=10
751-299
=751-300+1
=451+1
=452
(4分之1-6分之1-3分之1)除以24分之1
=(4分之1-6分之1-3分之1)×24
=6-4-8
=-6
20/13-(5/7-6/13)
=20/13+6/13-5/7
=2-5/7
=1又2/7
您好 您的答案:
1.25乘3.2乘0.25=1
751-299=352
(4分之1-6分之1-3分之1)除以24分之1
=(4分之1-6分之1-3分之1)×24
=6-4-8
=-6
20/13-(5/7-6/13)
=20/13+6/13-5/7
=2-5/7
=1又2/7