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13 September, 12:26

Y=-3x+3

Y=5x+19

Solve this system by substitution

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Answers (2)
  1. 13 September, 14:58
    0
    x=-2

    Step-by-step explanation:

    You can substitute the first equation into the second:

    -3x+3=5x+19

    Add 3x on both sides:

    3=8x+19

    Subtract 19 on both sides:

    -16=8x

    Divide 8 on both sides:

    x=-2
  2. 13 September, 15:26
    0
    x = - 2

    y = 9

    Step-by-step explanation:

    to evaluate this system of equation we would say that

    let

    Y=-3x+3 ... equation 1

    Y=5x+19 ... equation2

    substitute equation 2 into equation 1

    5x + 19 = - 3x + 3

    collect the like terms together

    5x + 3x = 3 - 19

    8x = - 16

    divide both sides by the coefficient of x which is 8

    8x/8 = - 16/8

    x = - 2

    put x = - 8 into equation 1

    Y=-3x+3 ... equation 1

    y = - 3 (-2) + 3

    y = 6 + 3

    y = 9

    therefore the value of x and y is - 2 and 9 respectively.
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