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8 December, 11:05

Which is the best first step in solving the following system of equations y=7x+3 y=9x

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Answers (2)
  1. 8 December, 11:35
    0
    Replace the y value in y=7x+3 with 9x

    Answer: x=3/2

    Step-by-step explanation:

    y=7x+3; y=9x

    9x=7x+3

    Subtract 7x from both sides

    2x=3

    Divide by 2 on both sides

    x=3/2
  2. 8 December, 13:40
    0
    13.5 and 1.5

    Step-by-step explanation:

    y=7x+3

    y=9x

    9x=7x+3

    2x=3

    x=3/2

    y=9 (3/2)

    y=13.5
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