(48*39*57)/(65*36*38)简便计算

问题描述:

(48*39*57)/(65*36*38)简便计算

(48*39*57)/(65*36*38)
=(12*4*3*13*19*3)/(13*5*12*3*19*2)
=[(12*3*13*19)*(4*3)]/[(12*3*13*19)*(5*2)]
=4*3/5*2
=6/5