(1-3/4×2/3)÷2 13-13×16/17 简便运算!

问题描述:

(1-3/4×2/3)÷2 13-13×16/17 简便运算!

(1-3/4×2/3)÷2
=(1-1/2)×1/2
=1/2×1/2
=1/4
13-13×16/17
=13×(1-16/17)
=13×1/17
=13/17