102=(s+s+3)*2

Solution for 102=(s+s+3)*2 equation:

Simplifying
102 = (s + s + 3) * 2

Reorder the terms:
102 = (3 + s + s) * 2

Combine like terms: s + s = 2s
102 = (3 + 2s) * 2

Reorder the terms for easier multiplication:
102 = 2(3 + 2s)
102 = (3 * 2 + 2s * 2)
102 = (6 + 4s)

Solving
102 = 6 + 4s

Solving for variable 's'.

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

Add '-4s' to each side of the equation.
102 + -4s = 6 + 4s + -4s

Combine like terms: 4s + -4s = 0
102 + -4s = 6 + 0
102 + -4s = 6

Add '-102' to each side of the equation.
102 + -102 + -4s = 6 + -102

Combine like terms: 102 + -102 = 0
0 + -4s = 6 + -102
-4s = 6 + -102

Combine like terms: 6 + -102 = -96
-4s = -96

Divide each side by '-4'.
s = 24

Simplifying
s = 24