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28 August, 09:29

Solve for y

4.2x - 1.4y = 2.1

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Answers (1)
  1. 28 August, 09:33
    0
    4.2x - 1.4y = 2.1 |multiply both sides by 10

    42x - 14y = 21 |subtract 42x from both sides

    -14y = 21 - 42x |change signs

    14y = 42x - 21 |divide both sides by 14

    y = 3x - 1.5
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