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20 September, 06:14

10x - 5y = 5

-20x + 6y=-22

this is elimination how do i doit

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Answers (1)
  1. 20 September, 08:27
    0
    Answer: The answer is 3 and 2

    Step-by-step explanation: multiply the first equation by 2

    Multiply the second equation by 1

    U get: 20x - 10y = 10

    - 20x + 6y = - 22

    Adding the equation

    Note: 20x + (-20x) = 0 meaning it has been eliminated

    Now we have only: - 10y + 6y = 10 - 22

    Giving: - 4y = - 12

    Divide both sides by - 4

    We have: y = 3

    Substitute the value of y into equation 1

    10x - 5 (3) = 5

    10x - 15 = 5

    Collect like terms

    10x = 5+15

    10x = 20

    Divide both sides by 10

    x = 2

    Hence; y=3; x=2
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