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11 August, 17:07

Solve the system by substitution.

3x + 4y = 0

- 7x + y = 62

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Answers (1)
  1. 11 August, 17:18
    0
    x = - 8 y = 6

    Step-by-step explanation:

    3x + 4y = 0

    4y = - 3x

    y = - 3/4x

    Substitute this into the other equation for y

    -7x + (-3/4x) = 62

    -7 3/4x = 62

    x = - 8

    Now plug x into one of the equations to find y

    3 (-8) + 4y = 0

    -24 + 4y = 0

    4y = 24

    y = 6
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