想問下一條數學題 1y-yx8分1-yx6分5=130?

👨🏻‍🏫 學術台數學

[匿名]

2015-08-30 9:03 am

回答 (1)

andrew

2015-08-30 9:34 am

1y - y × (1/8) - y × (5/6) = 130

y - (y/8) - (5y/6) = 130

(24y/24) - (3y/24) - (20y/24) = 130

(24y - 3y - 20y)/24 = 130

y/24 = 130

y = 3120

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