Ответ:
13 - 100%
9 - X
13x = 9×100
13x = 900
x = 900/13
x = 69 целых 3/13
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Ответ:
13 - 100%
9 - X
13x = 9×100
13x = 900
x = 900/13
x = 69 целых 3/13