18=(6+x)

Solution for 18=(6+x) equation:

Simplifying
18 = (6 + x)

Remove parenthesis around (6 + x)
18 = 6 + x

Solving
18 = 6 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
18 + -1x = 6 + x + -1x

Combine like terms: x + -1x = 0
18 + -1x = 6 + 0
18 + -1x = 6

Add '-18' to each side of the equation.
18 + -18 + -1x = 6 + -18

Combine like terms: 18 + -18 = 0
0 + -1x = 6 + -18
-1x = 6 + -18

Combine like terms: 6 + -18 = -12
-1x = -12

Divide each side by '-1'.
x = 12

Simplifying
x = 12