简便运算,1/2一1/3+1/4一1/5+1/6一1/12=
杜海宁回答:
=(1/2一1/3)+(1/4一1/5)+(1/6一1/12)
=1/6+1/20+1/12
=1/6+1/12+1/20
=1/4+1/20
=6/20
相关文章:
简便运算,1/2一1/3+1/4一1/5+1/6一1/12=
杜海宁回答:
=(1/2一1/3)+(1/4一1/5)+(1/6一1/12)
=1/6+1/20+1/12
=1/6+1/12+1/20
=1/4+1/20
=6/20