RichardGA
RichardGA RichardGA
  • 24-10-2017
  • Mathematics
contestada

What is the value of x in the equation 1/5x – 2/3y = 30, when y = 15? 4 8 80 200

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altavistard
altavistard altavistard
  • 24-10-2017
Start with 1/5x – 2/3y = 30.  Let y = 15:      (1/5)x – (2/3)(15) = 30

Then (1/5)x - 10 = 30, and (1/5)x = 40, and so x = 200 (answer)
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taniaorozco
taniaorozco taniaorozco
  • 24-10-2017
1/5x - 2/3y = 30;    y = 15

1/5x - 2/3(15) = 30

1/5x - 30/3 = 30

1/5x - 10 = 30

1/5x = 30 + 10

1/5x = 40 

x = 40 * 5

x = 200

hope this helped, God bless!
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