find the missing number that makes these fractions equal: ?/4 = 15/20

Question

find the missing number that makes these fractions equal:
?/4 = 15/20

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Helga 5 months 2021-08-06T14:56:44+00:00 1 Answers 5 views 0

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    2021-08-06T14:58:18+00:00

    Answer:

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )