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1 February, 14:59

Find the value of y when x equals - 20

x+3y=7

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Answers (2)
  1. 1 February, 15:20
    0
    x+3y=7

    Substitute - 20 for x

    -20+3y=7

    Add 20 to both sides

    3y=27

    Divide 3 on both sides

    Final Answer: y=9
  2. 1 February, 15:28
    0
    X=-20

    Plug in - 20 into the equation to get y.

    -20+3y=7

    3y=27

    y=9
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