4.5+(1又3分之2减6分之1)等于多少

问题描述:

4.5+(1又3分之2减6分之1)等于多少

=4.5+(5/3-1/6)
=4.5+(10/6-1/6)
=4.5+9/6
=4.5+1.5
=6

4.5+(2/5-6/1)
=4.5+3/7
=2/7

=4.5+(2/5-6/1)
=4.5+(6/15-6/1)
=4.5+3/7
=2/7