Equation:

3x - 16 = 23

Computation:

3x - 16 = 23 (transpose -16 to the right side)

3x = 23 + 16 ( change - to + )

3x = 39 (add 23 and 16)

3x/3 = 39/3 (divide both sides by 3)

x = 13

What is the number?

The number is 13