(s+3)+(s+3)=u

Solution for (s+3)+(s+3)=u equation:

Simplifying
(s + 3) + (s + 3) = u

Reorder the terms:
(3 + s) + (s + 3) = u

Remove parenthesis around (3 + s)
3 + s + (s + 3) = u

Reorder the terms:
3 + s + (3 + s) = u

Remove parenthesis around (3 + s)
3 + s + 3 + s = u

Reorder the terms:
3 + 3 + s + s = u

Combine like terms: 3 + 3 = 6
6 + s + s = u

Combine like terms: s + s = 2s
6 + 2s = u

Solving
6 + 2s = u

Solving for variable 's'.

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

Add '-6' to each side of the equation.
6 + -6 + 2s = -6 + u

Combine like terms: 6 + -6 = 0
0 + 2s = -6 + u
2s = -6 + u

Divide each side by '2'.
s = -3 + 0.5u

Simplifying
s = -3 + 0.5u