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10 September, 18:29

What's the value of x?

y = 5x + 9

y = - x + 3

+1
Answers (2)
  1. 10 September, 19:00
    0
    Answer: X=1.5
  2. 10 September, 19:08
    0
    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
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