2y X 70% =420

2007-01-02 1:26 am

y = 幾

請列式

please

回答 (9)

2007-01-02 1:29 am

✔ 最佳答案

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２ｙX７０／１００＝４２０

２ｙＸ７０＝４２０X１００

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2007-01-02 1:56 am

2y X 70% =420
2yX70/100=420
2yX70=42000
2y=42000/70
2y=600
y=300

參考: me

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2007-01-02 1:35 am

２ｙ * ７０％＝４２０

２ｙ*７０／１００＝４２０

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2007-01-02 1:33 am

2y X 70% =420
2y × 0.7 =420
ˉˉ1.4y =420
ˉˉˉˉy=300

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2007-01-02 1:33 am

2y X 70% =420
2yx7/10=420
2yx7/10x10/7=420x10/7
2y/2=600/2
y=300

/(''份''線)

參考: 自己算

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2007-01-02 1:32 am

2y x 70% = 420
2y = 420/0.7
2y = 600
y = 300

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2007-01-02 1:32 am

y=300

2y x 70%=420
2y = 420/ 0.7 (0.7=70%)
2y = 600
2y/2=600/2
y=300

* 420/0.7 = 420除以0.7

參考: my own calculation

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2007-01-02 1:31 am

2Y* 70%=420
2y =420/70%
2y=420*100/70
y=600/2
y=300

參考: Me

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2007-01-02 1:29 am

2y X 70% =420
2yX70/100=420
2yX70=42000
2y=42000/70
2y=600
y=300

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