2*(3+s)=2*(3+15)

Solution for 2*(3+s)=2*(3+15) equation:

Simplifying
2(3 + s) = 2(3 + 15)
(3 * 2 + s * 2) = 2(3 + 15)
(6 + 2s) = 2(3 + 15)

Combine like terms: 3 + 15 = 18
6 + 2s = 2(18)

Multiply 2 * 18
6 + 2s = 36

Solving
6 + 2s = 36

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 = 36 + -6

Combine like terms: 6 + -6 = 0
0 + 2s = 36 + -6
2s = 36 + -6

Combine like terms: 36 + -6 = 30
2s = 30

Divide each side by '2'.
s = 15

Simplifying
s = 15