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19 October, 07:57

Which is the approximate solution for the system of equations x+5y=10 and 3x+y=1?

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Answers (2)
  1. 19 October, 08:19
    0
    Answer: The approximate solution is (-0.36, 2.08).

    Step-by-step explanation:

    Given system of equations:

    x+5y=10 and 3x+y=1.

    Let us solve the system of equation by substitution.

    Solving second equation 3x+y=1 for y first.

    3x+y=1.

    Subtracting 3x from both sides, we get

    3x-3x+y=1-3x

    y = 1-3x.

    Substituting y=1-3x in first equation x+5y=10, we get

    x + 5 (1-3x) = 10.

    x + 5 - 15x = 10

    -14x + 5 = 10.

    Subtracting 5 from both sides, we get

    -14x + 5-5 = 10-5

    -14x = 5

    Dividing by - 14 on both sides, we get

    -14x/-14=5/-14

    x = - 0.36.

    Plugging x=-0.36 in second equation y=1-3x, we get

    y = 1-3 (-0.36) = 1+1.08 = 2.08.

    Therefore, approximate solution is (-0.36, 2.08).
  2. 19 October, 09:31
    0
    A (-0.3, 2.1)
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