4x + 4y = 12 -2x + y = -3

Question

4x + 4y = 12
-2x + y = -3

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Philomena 4 years 2021-08-17T14:50:52+00:00 2 Answers 19 views 0

Answers ( )

  1. Farah
    0
    2021-08-17T14:52:03+00:00
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    Answer:

    (4y=12)

    é só substituir a cordenada no par ordenado

  2. Edana
    0
    2021-08-17T14:52:38+00:00
    Reply

    Answer:

    (9/4, 3/4)

    Explanation:

    4x + 4y = 12
    2(-2x + y = -3)

    4x + 4y = 12
    -4x + 4y = -6

    8y = 6

    y = 3/4

    4x + 4(3/4) = 12

    4x + 3 = 12

    4x = 9

    x = 9/4

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