What does n mean in 2n plus 1 equals 22?

Answer 1

2n + 1 = 22

Take 1 from the left side of the equal side and move it to the right side.

To do this subtract 1 from the left side and on the right side

2n + 1 - 1 = 22 -1

2n = 21

Then divide both sides by 2 in order to isolate n.

2n / 2 = 21 /2

n = 21/2 or 10.5

Tada! The answer is 21/2 or 10.5.