(2分之3+3)X(3分之4+4)x(4分之5+5)x(5分之6+6)x(6分之7+7)

问题描述:

(2分之3+3)X(3分之4+4)x(4分之5+5)x(5分之6+6)x(6分之7+7)

(3/2+3)X(4/3+4)x(5/4+5)x(6/5+6)x(7/6+7)
=9/2X16/3X25/4X36/5X49/6
=9X4X5X49
=8820