(3分之2-0.25)÷(7分之3+14分之9) (能简算的要简算)

问题描述:

(3分之2-0.25)÷(7分之3+14分之9) (能简算的要简算)

(2/3-0.25)÷(3/7+9/14)
=(2/3-1/4)÷(6/14+9/14)
=(8/12-3/12)÷15/14
=5/12×14/15
=7/18