Question

Which equation is true when N equals 4
?
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

Answer 1

Let's evaluate each option by substituting \( N = 4 \) into the equations.

**A.** \( 2N = 6 \)
\( 2(4) = 8 \) (False)

**B.** \( N + 3 = 7 \)
\( 4 + 3 = 7 \) (True)

**C.** \( 9 - N = 13 \)
\( 9 - 4 = 5 \) (False)

**D.** \( \frac{N}{12} = 3 \)
\( \frac{4}{12} = \frac{1}{3} \) (False)

The only true equation when \( N = 4 \) is **B. \( N + 3 = 7 \)**.