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15 February, 05:08

Solve the system by substitution.

y = 2x

3x + 2y = 21

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Answers (1)
  1. 15 February, 07:51
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    Y=2x

    3x+2y=21

    3x+2 (2x) = 21

    3x+4x=21

    7x=21

    x=3

    y=2 (3)

    y=6
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