3x + y=11 -2x + y=1 Solve using substitution method

Question

3x + y=11
-2x + y=1
Solve using substitution method

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MichaelMet 3 years 2021-08-10T15:31:25+00:00 2 Answers 13 views 0

Answers ( )

  1. Tryphena
    0
    2021-08-10T15:32:59+00:00
    Reply

    Step-by-step explanation:

    here’s the solution : –

    =》3x + y = 11

    =》y = 11 – 3x

    now, plugging the value of y in equation 2

    =》-2x + y = 1

    =》-2x + 11 – 3x = 1

    =》-5x = -10

    =》x = 2

    now, plugging the value of x as 2 in equation 1

    =》3x + y = 11

    =》6 + y = 11

    =》y = 11 – 6

    =》y = 5

  2. Jezebel
    0
    2021-08-10T15:33:10+00:00
    Reply

    Answer:

    3x+yl=11

    -2x+y=11

    y=11-3x

    -2x+11-3x=11

    -5x=11-11

    so x=0

    y=11-0

    y=11

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