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28 January, 21:33

Linear equation

4.5 + 1.5y=24

x-y=4

+5
Answers (1)
  1. 29 January, 01:20
    0
    4.5x + 1.5y = 24 ⇒ 4.5x + 1.5y = 24

    1.0x - 1.0y = 4 ⇒ 4.5x - 4.5y = 18

    6y = 6

    6 6

    y = 1

    4.5x + 1.5 (1) = 24

    4.5x + 1.5 = 24

    - 1.5 - 1.5

    4.5x = 22.5

    4.5 4.5

    x = 5

    (x, y) = (5, 1)
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