Help!!! ＋ – x 除 分
10. (–5)–(–5分之2)
11.(–16)x(–4分之3)
12.(–6分1之)x(–2分之3)
13.(–40)除(–7分之4)
14(–8分之5)除(＋8又4分之3)
I want (＋5)＋(–7)
=XX+xx
=xx
更新1:
want (＋xx)＋(–xx) =XX+xx =xx
負數問題?
2007-09-03 12:35 am
負數?
Help!!! ＋ – x 除 分
10. (–5)–(–5分之2)
11.(–16)x(–4分之3)
12.(–6分1之)x(–2分之3)
13.(–40)除(–7分之4)
14(–8分之5)除(＋8又4分之3)
I want (＋5)＋(–7)
=XX+xx
=xx
Help!!! ＋ – x 除 分
10. (–5)–(–5分之2)
11.(–16)x(–4分之3)
12.(–6分1之)x(–2分之3)
13.(–40)除(–7分之4)
14(–8分之5)除(＋8又4分之3)
I want (＋5)＋(–7)
=XX+xx
=xx
回答 (2)
2007-09-03 11:51 pm
10. (-5)-(2/5)
=-5+2/5
=-4_/5/5+2/5
=-(4/7/5)
=-5/2/5
11. (-16)(–3/4)
=16X3/4
=12
12. (-1/6)(–3/2)
=1/6X3/2
=1/4
13. (-40)/(-4/7)
=40/(4/7)
=40(7/4)
=70
14. (-5/8)/(8/3/4)
=-(5/8X4/35)
=-1/14
15. (+5)+(-7)
=5-7
=2
=-5+2/5
=-4_/5/5+2/5
=-(4/7/5)
=-5/2/5
11. (-16)(–3/4)
=16X3/4
=12
12. (-1/6)(–3/2)
=1/6X3/2
=1/4
13. (-40)/(-4/7)
=40/(4/7)
=40(7/4)
=70
14. (-5/8)/(8/3/4)
=-(5/8X4/35)
=-1/14
15. (+5)+(-7)
=5-7
=2
參考: me
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