7,2 : 1/100 = 7 2/10 : 1/100 =
= 72/10 : 1/100 = 72/10 * 100/1 = (сокращ.10 и 100) =
= 72 * 10 = 720
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7,2 : 1/100 = 7 2/10 : 1/100 =
= 72/10 : 1/100 = 72/10 * 100/1 = (сокращ.10 и 100) =
= 72 * 10 = 720