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20 February, 14:39

Solve the following systems of equations express your answer as an ordered pair in the format (a, b) With no spaces between the numbers or symbols

2x+7y=-7

-4x-3y=19

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  1. 20 February, 17:46
    0
    Answer: 5/11,5

    Step-by-step explanation:

    Multiply equation one by - 4

    Multiply equation two by 2

    Then, it becomes

    -8x - 28y = 28

    -8x - 6y = 38

    Subtract equation two from equation one.

    It becomes - 22y = - 10

    Divide both sides by 22, you have y = 5/11

    NOW substitute y=5/11 into equation two to get X.

    -4x - 3 (5/11) = 19

    -4x = 19 + 15/11

    -4x = 20

    Divide both sides by - 4

    X = - 5
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