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24除7/12-24乘5/7=? 62除〈3/8+2/5>乘1/4=?〈2-1/2〉除〈11/12-3/4〉=?〈1/4

来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/11/05 14:47:02
24除7/12-24乘5/7=? 62除〈3/8+2/5>乘1/4=?〈2-1/2〉除〈11/12-3/4〉=?〈1/4+1/6〉乘36=? 要过程.
24÷7/12-24×5/7
=24×12/7-24×5/7
=24×(12/7-5/7)
=24×1
=24
62÷(3/8+2/5)×1/4
=62÷(15/40+16/40)×1/4
=62÷31/40×1/4
=62×40/31×1/4
=20
(2-1/2)÷(11/12-3/4)
=(4/2-1/2)÷(11/12-9/12)
=3/2÷1/6
=3/2×6
=9
(1/4+1/6)×36
=1/4×36+1/6×36
=9+6
=15