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18 December, 11:56

4x+9Y=-19

-4X-7=13

Solving systems of equations using any method

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Answers (1)
  1. 18 December, 12:39
    0
    x = - 4.975

    y = 0.1

    Step-by-step explanation:

    - 4x - 7 = 13 we may assume as eq 1

    4x+9y = - 19 this is eq 2

    eq 1+2,

    9y-7 = - 6

    9y=1

    y=0.1

    y=0.1 in eq 1,

    4x+9 (0.1) = - 19

    4x = - 19.9

    x = - 4.975
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