Steps to solve the equation 4n - 2n + 4 = - 1 + 17

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

2n+4=-1+17

-1+17=16

2n+4=16

Move + 4 to the other side. Sign changes from + 4 to - 4

2n+4-4=16-4

2n=12

Divide by 2 for 2n and 12

2n/2=12/2

n=6

Check answer by using substitution method

4 (6) - 2 (6) + 4=16

24-12+4=16

12+4=16

16=16

Answer : n=6

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

2n + 4 = 16

-4 - 4

2n = 12

2 2

n = 6