# Steps

Let x be the number.

Half of the number is x/2

x plus x/2 equal 18

(3x)/2 equals 18

3x equals 36

x equal (36)/3

x equal 12

# Answer

12

Let x be the number.

Half of the number is x/2

x plus x/2 equal 18

(3x)/2 equals 18

3x equals 36

x equal (36)/3

x equal 12

12