(2+u)-1=6.6

Solution for (2+u)-1=6.6 equation:

Simplifying
(2 + u) + -1 = 6.6

Remove parenthesis around (2 + u)
2 + u + -1 = 6.6

Reorder the terms:
2 + -1 + u = 6.6

Combine like terms: 2 + -1 = 1
1 + u = 6.6

Solving
1 + u = 6.6

Solving for variable 'u'.

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

Add '-1' to each side of the equation.
1 + -1 + u = 6.6 + -1

Combine like terms: 1 + -1 = 0
0 + u = 6.6 + -1
u = 6.6 + -1

Combine like terms: 6.6 + -1 = 5.6
u = 5.6

Simplifying
u = 5.6