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------------------------------------------------ If [tex]n + 10 = 40[/tex], then what is the value of the expression [tex]n - 25[/tex]?

A. 5
B. 25
C. 30
D. 50

Answer :

Let's solve the problem step by step:

1. We are given the equation [tex]\(n + 10 = 40\)[/tex].
2. To find [tex]\(n\)[/tex], we need to isolate it by subtracting 10 from both sides of the equation:
[tex]\[
n + 10 - 10 = 40 - 10
\][/tex]
[tex]\[
n = 30
\][/tex]

3. Now, we need to find the value of the expression [tex]\(n - 25\)[/tex].
4. Substitute the value of [tex]\(n\)[/tex] we found into the expression:
[tex]\[
n - 25 = 30 - 25
\][/tex]
[tex]\[
n - 25 = 5
\][/tex]

So, the value of the expression [tex]\(n - 25\)[/tex] is 5. Therefore, the correct answer is option A: 5.

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