openwindow
openwindow
06-04-2022
Mathematics
contestada
I need help, please and thank you
Respuesta :
Аноним
Аноним
06-04-2022
Answer:
See below ↓
Step-by-step explanation:
Problem
[tex]\frac{5x}{x+7} + \frac{7}{x}[/tex]
Work
[tex]\frac{5x(x)+7(x+7)}{x(x+7)}[/tex]
[tex]\frac{5x^{2} +7x+49}{x(x+7)}[/tex]
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
Solution
[tex]\frac{5x^{2} +7x+49}{x(x+7)}[/tex]
Answer Link
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