87X86/3用简便方法怎么算?
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解决时间 2021-03-17 16:27
- 提问者网友:心如荒岛囚我终老
- 2021-03-16 17:14
87X86/3用简便方法怎么算?
最佳答案
- 五星知识达人网友:话散在刀尖上
- 2021-03-16 18:44
87x86/3
=29X3X86/3
=29X86
=(30-1)X86
=30x86-86
=2580-86
=2494
希望能帮你忙,不懂请追问,懂了请采纳,谢谢追问8分子5乘以7加8分子1乘以5
6分子5乘以25减6分子1乘以85用简便方法计算追答=5/8X7+1/8x5
=5/8x(7+1)
=5/8x8
=5
=5/6x25-1/6x85
=5/6x25-5/6x17
=5/6x(25-17)
=5/6x8
=20/3追问没看清题吧,答案的数字和题不一样呀追答答案一个是5 一个是3分之20,对的,我检验过了追问第一个从哪来的5/8X(7+1) 第二个从哪里来的5/6X25-5/6x17,这两个就和本题不一样的数字,请你再看看我问的数字追答你反应好慢
=5/8X7+1/8x5
=5/8X7+5/8x1
=5/8x(7+1)
=5/8x8
=5
=5/6x25-1/6x85
=5/6x25-5/6x17
=5/6x(25-17)
=5/6x8
=20/3
85=5x17
=29X3X86/3
=29X86
=(30-1)X86
=30x86-86
=2580-86
=2494
希望能帮你忙,不懂请追问,懂了请采纳,谢谢追问8分子5乘以7加8分子1乘以5
6分子5乘以25减6分子1乘以85用简便方法计算追答=5/8X7+1/8x5
=5/8x(7+1)
=5/8x8
=5
=5/6x25-1/6x85
=5/6x25-5/6x17
=5/6x(25-17)
=5/6x8
=20/3追问没看清题吧,答案的数字和题不一样呀追答答案一个是5 一个是3分之20,对的,我检验过了追问第一个从哪来的5/8X(7+1) 第二个从哪里来的5/6X25-5/6x17,这两个就和本题不一样的数字,请你再看看我问的数字追答你反应好慢
=5/8X7+1/8x5
=5/8X7+5/8x1
=5/8x(7+1)
=5/8x8
=5
=5/6x25-1/6x85
=5/6x25-5/6x17
=5/6x(25-17)
=5/6x8
=20/3
85=5x17
全部回答
- 1楼网友:痴妹与他
- 2021-03-16 19:26
87X86/3
=(86+1)×86/3
=86×86/3+86/3
=3又86/3
希望能帮到你, 祝你学习进步,不理解请追问,理解请及时采纳!(*^__^*)
=(86+1)×86/3
=86×86/3+86/3
=3又86/3
希望能帮到你, 祝你学习进步,不理解请追问,理解请及时采纳!(*^__^*)
- 2楼网友:过活
- 2021-03-16 19:00
计算器
等于2494
等于2494
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