What is the inverse (opposite) of subtraction?

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What is the inverse (opposite) of subtraction?

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Gia Bảo 5 months 2021-09-01T15:40:54+00:00 1 Answers 3 views 0

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    2021-09-01T15:42:05+00:00

    Answer: Addition I think

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