Move all terms not containing u to the right side of the equation.
Add 22.1 to both sides of the equation.
Add 16.3 and 22.1.
Divide each term by 6 and simplify.
Divide each term in 6u=38.4 by 6.
Cancel the common factor of 6.
Cancel the common factor.
Divide u by 1.
Divide 38.4 by 6.
Solve for u -22.1+6u=16.3