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podryga [215]
2 years ago
10

I need help, please and thank you

Mathematics
1 answer:
borishaifa [10]2 years ago
5 0

Answer:

See below ↓

Step-by-step explanation:

<u>Problem</u>

  • <u />\frac{5x}{x+7} + \frac{7}{x}

<u>Work</u>

  • <u />\frac{5x(x)+7(x+7)}{x(x+7)}
  • \frac{5x^{2} +7x+49}{x(x+7)}
  • The student's mistake was that instead of taking x(x + 7) as the LCM (Least Common Multiple), he took x + 7, which is not possible in this case

<u>Solution</u>

  • <u />\frac{5x^{2} +7x+49}{x(x+7)}
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