Question
Which equation is true when
?
A
2n=62n=62n=6
B
n+3=7n+3=7n+3=7
C
9−n=139-n=139−n=13
D
n12=3\frac{n}{12}=3
12
n
=3
Answers
GPT-4o mini
To determine which equation is true, we can solve each equation for \( n \).
### A. \( 2n = 6 \)
\[
2n = 6
\]
To solve for \( n \):
\[
n = \frac{6}{2} = 3
\]
### B. \( n + 3 = 7 \)
\[
n + 3 = 7
\]
To solve for \( n \):
\[
n = 7 - 3 = 4
\]
### C. \( 9 - n = 13 \)
\[
9 - n = 13
\]
To solve for \( n \):
\[
-n = 13 - 9
\]
\[
-n = 4
\]
\[
n = -4
\]
### D. \( \frac{n}{12} = 3 \)
\[
\frac{n}{12} = 3
\]
To solve for \( n \):
\[
n = 3 \times 12 = 36
\]
Now we have the solutions:
- A: \( n = 3 \)
- B: \( n = 4 \)
- C: \( n = -4 \)
- D: \( n = 36 \)
Please let me know what context or specific value of \( n \) you are looking for to identify the "true" equation. If you are looking for the equation that equals a specific value or condition, please provide that information.
### A. \( 2n = 6 \)
\[
2n = 6
\]
To solve for \( n \):
\[
n = \frac{6}{2} = 3
\]
### B. \( n + 3 = 7 \)
\[
n + 3 = 7
\]
To solve for \( n \):
\[
n = 7 - 3 = 4
\]
### C. \( 9 - n = 13 \)
\[
9 - n = 13
\]
To solve for \( n \):
\[
-n = 13 - 9
\]
\[
-n = 4
\]
\[
n = -4
\]
### D. \( \frac{n}{12} = 3 \)
\[
\frac{n}{12} = 3
\]
To solve for \( n \):
\[
n = 3 \times 12 = 36
\]
Now we have the solutions:
- A: \( n = 3 \)
- B: \( n = 4 \)
- C: \( n = -4 \)
- D: \( n = 36 \)
Please let me know what context or specific value of \( n \) you are looking for to identify the "true" equation. If you are looking for the equation that equals a specific value or condition, please provide that information.