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6 January, 18:30

Solve the system of linear equations. What is the value of y?

9x-6y=15

6x+21y=60

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Answers (1)
  1. 6 January, 18:54
    0
    y = 5

    y = 2.2

    Step-by-step explanation:

    For the first one:

    9x = 9 x1 = 9

    9 - 6 = 3

    3y = 15

    15 : 3 = 5

    y = 5

    For the second one:

    6x = 6 x 1 = 6

    6 + 21 = 27

    27y = 60

    60 : 27 ~ 2.2

    y = 2.2
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