x + 1/2 x + 1/3 x = 33

Combine the terms with x:

x(1 + 1/2 + 1/3) = 33

Find a common denominator for the fractions:

x(6/6 + 3/6 + 2/6) = 33

Simplify the expression in the parentheses:

x(11/6) = 33

Solve for x:

x = 33 * (6/11)

x = 3 * 6

x = 18