3分之2与9分之4的和被2个3分之2的积除,商是多少

问题描述:

3分之2与9分之4的和被2个3分之2的积除,商是多少

(2/3+4/9)÷(2/3×2/3)
=(6/9+4/9)÷4/9
=10/9÷4/9
=10/9×9/4
=10/4
=2.5