Find the missing number _____:7 = 12:21 A. 4 B. 3 C. 14 D. 12
4:7 = 12:21 x/7 = 12/21; 21x = 7*12; 21x = 84; x = 84/21; x = 4.
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Question
Updated 7/31/2020 8:23:54 PM
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8
4:7 = 12:21
x/7 = 12/21;
21x = 7*12;
21x = 84;
x = 84/21;
x = 4.

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