(PLZ FAST- 30 PTS)Which expressions are equivalent? 3x – 7y and -7y + 3x 3x – 7y and 7y – 3x 3x – 7y and 3y – 7x 3x

Question

(PLZ FAST- 30 PTS)Which expressions are equivalent?
3x – 7y and -7y + 3x
3x – 7y and 7y – 3x
3x – 7y and 3y – 7x
3x – 7y and -3y + 7x

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Sigridomena 3 years 2021-07-21T22:01:53+00:00 2 Answers 14 views 0

Answers ( )

  1. Gerda
    0
    2021-07-21T22:03:16+00:00
    Reply

    The answer is

    3x-7y and -7y+3x

  2. trungdung22
    0
    2021-07-21T22:03:27+00:00
    Reply

    Answer:

    A. 3x-7y and -7y+3x

    Step-by-step explanation:

    Let x=1, y=2

    3(1)-7(2)

    3-14

    -11

    -7(2)+3(1)

    -14+3

    -11

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