5-2.9=u

Solution for 5-2.9=u equation:

Simplifying
5 + -2.9 = u

Combine like terms: 5 + -2.9 = 2.1
2.1 = u

Solving
2.1 = 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.
2.1 + -1u = u + -1u

Combine like terms: u + -1u = 0
2.1 + -1u = 0

Add '-2.1' to each side of the equation.
2.1 + -2.1 + -1u = 0 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + -1u = 0 + -2.1
-1u = 0 + -2.1

Combine like terms: 0 + -2.1 = -2.1
-1u = -2.1

Divide each side by '-1'.
u = 2.1

Simplifying
u = 2.1