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3 May, 07:37

X+y=-3 y=2x Solve the linear equation

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Answers (2)
  1. 3 May, 08:55
    0
    X+Y=-3, Y=2X, so

    X+2X=-3

    3X=-3 | / 3

    X=-1
  2. 3 May, 09:42
    0
    X + y = - 3

    y = 2x

    x + y = - 3

    plug in 2x for y

    x + 2x = - 3

    combine like terms

    3x = - 3

    divide both sides by 3 to isolate x

    x = - 1
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