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28 August, 08:23

2x-y=10

Y=-x-1

Solve the system of equations

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Answers (1)
  1. 28 August, 08:40
    0
    Answer: (9,8)

    Step-by-step explanation:

    let 2x - y = 10 be [a] & y = x - 1 be [b]

    First, lets substitute [b] into [a] and solve for x

    2x - (x - 1) = 10

    2x - x = 10 - 1

    x = 9

    Now, since x = 9, we can substitute for x in [b]

    ⇒ y = 9 - 1

    y = 8

    ∴ the solution for the system of equations is x = 9, y = 8 OR (9, 8)
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