33 12— * — 4 11===

问题描述:

33 12
— * —
4 11
=
=
=

33 3
=— *—
1 11
3 3
=—*—
1 1
=9

33 12
— * —
4 11
3 3
= — * —
1 1
=3*3
= 9

(33/4)*(12/11)=(3/1)*(3/1)=9

(33/4)*(12/11)=(33/11)*(12/4)=3*3=9

33/4x12/11
=3/4x12/1
=3x3/1
=9