Maths questions??(7)

2006-12-09 4:58 am

How to solve this equation??
20+b=120%b

b=?

回答 (6)

2006-12-09 5:01 am

✔ 最佳答案

20 +b = 120%b
20 +b = 1.2b
20 = 1.2b - b
20 = 0.2 b
20/0.2 = b
b = 100

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2006-12-23 5:25 pm

20 +b = 120%b
20 +b = 1.2b
20 = 1.2b - b
20 = 0.2 b
20/0.2 = b
b = 100

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2006-12-15 10:48 pm

b=100
easy~

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2006-12-09 6:30 am

20 +b = 120%b
20=120%b-100%b
20 =1/5b
100=b

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2006-12-09 5:02 am

20+b=1.2b
20=0.2b
b=100

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2006-12-09 5:01 am

ｂ＝１００

參考: ｍｅ

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