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20 June, 19:54

Solve the substitution 4x-3y=5

Y=2x-3

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Answers (1)
  1. 20 June, 20:13
    0
    4x - 3y = 5

    y = 2x - 3

    4x - 3 (2x - 3) = 5

    4x - 3 (2x) - 3 (-3) = 5

    4x - 6x + 9 = 5

    -2x + 9 = 5

    - 9 - 9

    -2x = - 4

    -2 - 2

    x = 2

    y = 2x - 3

    y = 2 (2) - 3

    y = 4 - 3

    y = 1

    (x, y) = (2, 1)
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