The denominator in the equation x0.7 − 0.17 − 0.2x0.03 = 1 is changed into an integer, and the correct one is () A. x7−17−2x3＝1B. 10x7−17−2x3＝1C. 10x7−17−20x3＝10D. 10x7−17−20x3＝1

The two formulas on the left of the equation are expanded by 10 times and 100 times respectively, and the result is: 10x7-17 − 20x3 = 1, so D

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