Move all terms containing u to the left side of the equation.
Subtract 14u from both sides of the equation.
Subtract 14u from 18u.
Move all terms not containing u to the right side of the equation.
Subtract 23 from both sides of the equation.
Subtract 23 from -21.
Divide each term by 4 and simplify.
Divide each term in 4u=-44 by 4.
Cancel the common factor of 4.
Cancel the common factor.
Divide u by 1.
Divide -44 by 4.
Solve for u 23+18u=-21+14u