enter in the number below that will make the right expression equivalent to the left expression: 7+2+n=___+n

Question

enter in the number below that will make the right expression equivalent to the left expression:
7+2+n=___+n

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Thu Nguyệt 3 months 2021-07-19T16:28:06+00:00 1 Answers 4 views 0

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    2021-07-19T16:29:25+00:00

    9 because 7+2=9 and that’s all that changes

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