Using a simple method to calculate (- 1 / 30) / (2 / 3-1 / 10 + 1 / 6-2 / 5) answers Using a simple method to calculate (- 1 / 30) / (2 / 3-1 / 10 + 1 / 6-2 / 5) thank you very much!

—1\30÷1\3=—1\30×3=—1\10=01

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