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4 January, 02:19

What is the value of y in the solution to the system of equations?

1/3 x + 1/4y = 1

2x - 3y = - 30

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Answers (1)
  1. 4 January, 06:15
    0
    1 Solve for x in 1/3x+1/4y=1

    X=3 (1-y/4)

    2 Substitute x=3 (1-y/4) into 2x-3y=-30

    6-9y/2 = - 30

    3 Solve for y in 6-9y/2=-30

    y=8

    4 Substitute y=8 into x=3 (1-y/4)

    x=-3

    5 Therefore,

    x=-3

    y=8
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