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Mathematics, 02.12.2020 19:00 imorn20731

Which value of x makes the equation x + 7 = 21 true?
O A. 7
O B. 14
O c. 21
OD. 28

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Which value of x makes the equation x + 7 = 21 true?
O A. 7
O B. 14
O c. 21
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