MATH F.1 10 分

👨🏻‍🏫 學術台數學

ddobtn

2008-02-08 5:55 am

find the ratio a:b:c

a:b=3:7, b:c =14:15

點做&點解

回答 (7)

ocean

2008-02-08 6:04 am

✔ 最佳答案

將b通分母...............(x2)
a:b:c
a:b=6:14
b:c=14:15
所以a:b:c=6:14:15

;

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[匿名]

2008-02-08 11:39 pm

a:b=3:7, b:c =14:15
a:b=3:7=6:14
therefore a:b:c=6:14:15

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mickymousewinky

2008-02-08 8:53 am

a:b=3:7 b:c=14:15
將a:b=3:7倍大兩倍------->6:14
咁就會同b:c=14:15有一個數一樣,咁會易計D
then,a:b:c=6:14:15
that's the ans!!!

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Ann

2008-02-08 7:58 am

a:b =3:7
b:c = 14:15
--------------------------
a:b =6:14
b:c = 14:15
--------------------------
a:b:c=6:14:15

參考: 自己

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匿名

2008-02-08 6:29 am

通份母
橫式
a:b = 3:7
= 2(3):2(7)
= 6:14

b:c= 14:15

a:b:c=6:14:15

直式
a b c
3 7
14 15
---------------------------
3(14) 7(14) 7(15)
42 98 105

=6:14:15

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Chan

2008-02-08 6:21 am

2a:2b =6:14
b:c=14:15

a:b:c=6:14:15

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怡

2008-02-08 6:01 am

a;b =3;7
b;c = 14;15
____________
6:14:15

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