20-14=u

Solution for 20-14=u equation:

Simplifying
20 + -14 = u

Combine like terms: 20 + -14 = 6
6 = u

Solving
6 = u

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '-1u' to each side of the equation.
6 + -1u = u + -1u

Combine like terms: u + -1u = 0
6 + -1u = 0

Add '-6' to each side of the equation.
6 + -6 + -1u = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -1u = 0 + -6
-1u = 0 + -6

Combine like terms: 0 + -6 = -6
-1u = -6

Divide each side by '-1'.
u = 6

Simplifying
u = 6