.4u+39.6=u

Solution for .4u+39.6=u equation:

Simplifying
0.4u + 39.6 = u

Reorder the terms:
39.6 + 0.4u = u

Solving
39.6 + 0.4u = 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.
39.6 + 0.4u + -1u = u + -1u

Combine like terms: 0.4u + -1u = -0.6u
39.6 + -0.6u = u + -1u

Combine like terms: u + -1u = 0
39.6 + -0.6u = 0

Add '-39.6' to each side of the equation.
39.6 + -39.6 + -0.6u = 0 + -39.6

Combine like terms: 39.6 + -39.6 = 0.0
0.0 + -0.6u = 0 + -39.6
-0.6u = 0 + -39.6

Combine like terms: 0 + -39.6 = -39.6
-0.6u = -39.6

Divide each side by '-0.6'.
u = 66

Simplifying
u = 66