Determine the solution to the following problem:

Question

2x + 5 = 21
A. 26
B. 13
C. 8
D. 16

Answer 1

B. 13

To solve for x, subtract 5 from both sides of the equation:
2x + 5 - 5 = 21 - 5
2x = 16

Then, divide both sides by 2:
2x/2 = 16/2
x = 8

Therefore, the solution is x = 8.