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17 April, 20:53

5x + 10y = 18

x = y - 6

Which of the following equations is the result of substituting y - 6 in for x in the first equation?

a) 5x + 10y - 6 = 18

b) 5y - 6 + 10y = 18

c) 5y - 30 + 10y = 18

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Answers (1)
  1. 17 April, 21:13
    0
    I believe the correct answer from the choices listed above is option C. The result of substituting y - 6 in for x in the first equation would be 5y - 30 + 10y = 18. This is done as follows:

    5x + 10y = 18

    5 (y - 6) + 10y = 18

    5y - 30 + 10y = 18

    Hope this answers the question. Have a nice day.
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