(1-3/4×2/3)÷2 13-13×16/17 简便运算!
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(1-3/4×2/3)÷2 13-13×16/17 简便运算!
(1-3/4×2/3)÷2 13-13×16/17 简便运算!
(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