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7 June, 19:08

What is the y-value in the solution to this system of linear equations?

4x + 5y = - 12

-2x + 3y = - 1

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Answers (1)
  1. 7 June, 19:30
    0
    x = - 31/22, y = - 14/11

    Step-by-step explanation:

    4x + 5y = - 12 ... (1)

    -2x + 3y = - 1 ... (2)

    multiply equation (2) by 2

    -4x + 6y = - 2 ... (3)

    solving equation (1) and (3) by elimination method, we add equations (1) and (3)

    11y = - 14

    y = - 14/11

    substitute y = - 14/11 for the value of x in equation (2)

    -2x + 3 (-14/11) = - 1

    -2x = 42/11 - 1 = 31/11

    x = - 31/22
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