what’s the value of x? y= 5x + 9 y= -x + 3

Question

what’s the value of x?
y= 5x + 9
y= -x + 3

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Athena 1 week 2021-09-13T23:20:41+00:00 2 Answers 0

Answers ( )

  1. Ava
    0
    2021-09-13T23:21:55+00:00

    Answer:

    x = -1

    Step-by-step explanation:

    y = 5x + 9              ……..1

    y = -x + 3               ……..2

    making x the subject of formula from equation 2

    x = 3 – y             ……..3

    substituting equation 3 in 1, we have

    y= 5(3 -y) + 9

    y = 15 – 5y + 9

    y + 5y = 15 + 9

    6y = 24

    y = 24 / 6

      = 4

    substituting y = 4 in equation (3)

    x = 3 – 4

    x  = -1

  2. Ava
    0
    2021-09-13T23:22:35+00:00

    Answer: X=1.5

    Step-by-step explanation:

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