x+(x+3)+2x+(x+x+3)=30

Solution for x+(x+3)+2x+(x+x+3)=30 equation:

Simplifying
x + (x + 3) + 2x + (x + x + 3) = 30

Reorder the terms:
x + (3 + x) + 2x + (x + x + 3) = 30

Remove parenthesis around (3 + x)
x + 3 + x + 2x + (x + x + 3) = 30

Reorder the terms:
x + 3 + x + 2x + (3 + x + x) = 30

Combine like terms: x + x = 2x
x + 3 + x + 2x + (3 + 2x) = 30

Remove parenthesis around (3 + 2x)
x + 3 + x + 2x + 3 + 2x = 30

Reorder the terms:
3 + 3 + x + x + 2x + 2x = 30

Combine like terms: 3 + 3 = 6
6 + x + x + 2x + 2x = 30

Combine like terms: x + x = 2x
6 + 2x + 2x + 2x = 30

Combine like terms: 2x + 2x = 4x
6 + 4x + 2x = 30

Combine like terms: 4x + 2x = 6x
6 + 6x = 30

Solving
6 + 6x = 30

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 + 6x = 30 + -6

Combine like terms: 6 + -6 = 0
0 + 6x = 30 + -6
6x = 30 + -6

Combine like terms: 30 + -6 = 24
6x = 24

Divide each side by '6'.
x = 4

Simplifying
x = 4