Answer :

To solve the expression [tex]\(5 \log 6 - 7 \log 9.42 + 23 \log 34.5 - \log 10.5\)[/tex], follow these steps:

1. Calculate Each Logarithmic Term:

- First, compute [tex]\(5 \log 6\)[/tex]:
[tex]\[ 5 \log 6 \approx 3.8908 \][/tex]
- Next, compute [tex]\(7 \log 9.42\)[/tex]:
[tex]\[ 7 \log 9.42 \approx 6.8184 \][/tex]
- Then, compute [tex]\(23 \log 34.5\)[/tex]:
[tex]\[ 23 \log 34.5 \approx 35.3698 \][/tex]
- Finally, compute [tex]\(\log 10.5\)[/tex]:
[tex]\[ \log 10.5 \approx 1.0212 \][/tex]

2. Combine the Terms Using Arithmetic Operations:

- Begin with the first term, subtract the second term:
[tex]\[ 3.8908 - 6.8184 = -2.9276 \][/tex]
- Add the third term:
[tex]\[ -2.9276 + 35.3698 = 32.4422 \][/tex]
- Subtract the fourth term:
[tex]\[ 32.4422 - 1.0212 = 31.4210 \][/tex]

3. Present the Final Result:

[tex]\[ 5 \log 6 - 7 \log 9.42 + 23 \log 34.5 - \log 10.5 \approx 31.4210 \][/tex]

So, the detailed solution indicates that the final result of the given expression is approximately [tex]\(31.4210\)[/tex].