Question

answer the question ​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

1. 1/n+4-1/n-7=11/30

• n-7-n-4/(n+4)(n-7)=11/30
• -11/n^2-7n+4n-28=11/30
• -330=11n^2-77n+44n-308
• 11n^2-33n-22=0
• n^2-3n-2=0
• n=1, n=2

2. 1/n +1/n-2=0

• n-2+n/n^2-2n=0
• 2n-2=n^2-2n
• n^2-4n-2=0
• n=2, n=2

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