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🎓 學業台小學及中學教育

[匿名]

2010-10-03 12:52 am

1.3分之b 減6 = 3 b=?
2.4分之3個y= 1減 2分之1個y y=?
3.3分之2s減1=5分之(s+2) s=?
4.9分之1個(h+9)=6分之5減2分之1個(h+7) h=?

更新1:

1.b=? 2.y=? 3.s=? 4.h=?

更新2:

sorry係 1.b/3-(5-b)=3 2.3/4y=1-1/2y 3.2s/3-1=(s+2)/5 4.1/9×(h+9)=5/6-1/2×(h+7) 做成不便,敬請原諒

回答 (3)

[匿名]

2010-10-03 2:46 am

✔ 最佳答案

1.b/3-(5-b)=3
b-3(5-b)=9
b-15+3b=9
4b=24
b=6

2.3/4y=1-1/2y
3y/4=1-y/2
3y=4-2y
5y=4
y=4/5

3.2s/3-1=(s+2)/5
(2s-3)/3=(s+2)/5
10s-15=3s+6
7s=21
s=3

4.1/9×(h+9)=5/6-1/2×(h+7)
(h+9)/9=5/6-(h+7)/2
(h+9)/9=(5-3(h+7))/6
(h+9)/9=(5-3h-21)/6
6(h+9)=9(-3h-16)
6h+54=-27h-144
33h=-198
h=-6

參考: my brain + my calculator

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victor

2010-10-04 2:26 am

002抄襲001的答案,反而說001抄襲! O.o

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[匿名]

2010-10-04 1:29 am

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收錄日期: 2021-04-27 12:59:32
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