Question

The steps below show the incomplete solution to find the value of n for the equation 4n − 2n + 4 = −1 + 17:

Answer 1

Answer:

2n = 12

Step-by-step explanation:

4n-2n+4 = -1+17

add -1 and 17

4n-2n + 4 = 16

combine like terns

2n+ 4 = 16

subtract 4 from each side

2n+4-4 = 16-4

2n - 12

Answer 2

Answer:

(A) $2n=12$

Step-by-step explanation:

The given equation is:

$4n-2n+4=-1+17$

Solving the above equation, we get

Step 1. $4n-2n+4=-1+17$

solving the RHS of the above equation, we get

Step 2. $4n-2n+4=16$

Solving the LHs of the above equation, we get

Step 3. $2n+4=16$

Step 4. $2n=12$

⇒$n=6$

Therefore, the value of n is $6$ and teh next step is  $2n=12$.

Hence, option (A) is correct.