用简便方法计算 45÷ [（4/5–2/3）＊ 3/2]
问题描述：
用简便方法计算 45÷ [（4/5–2/3）＊ 3/2]
答
45 / [ ( 4/5 - 2/3 ) X 3/2 ]
= 45 / [ 4/5 X 3/2 - 2/3 X 3/2 ]
= 45 / [ 6/5 - 1 ]
= 45 / ( 1/5 )
= 45 X 5
= 9 X 5 X 5
= 25 X (8 + 1)
= 200 + 25
= 225