(x+3)+(x+3)=16

Solution for (x+3)+(x+3)=16 equation:

Simplifying
(x + 3) + (x + 3) = 16

Reorder the terms:
(3 + x) + (x + 3) = 16

Remove parenthesis around (3 + x)
3 + x + (x + 3) = 16

Reorder the terms:
3 + x + (3 + x) = 16

Remove parenthesis around (3 + x)
3 + x + 3 + x = 16

Reorder the terms:
3 + 3 + x + x = 16

Combine like terms: 3 + 3 = 6
6 + x + x = 16

Combine like terms: x + x = 2x
6 + 2x = 16

Solving
6 + 2x = 16

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 2x = 16 + -6

Combine like terms: 6 + -6 = 0
0 + 2x = 16 + -6
2x = 16 + -6

Combine like terms: 16 + -6 = 10
2x = 10

Divide each side by '2'.
x = 5

Simplifying
x = 5