3+(x+3)+4x=0

Solution for 3+(x+3)+4x=0 equation:

Simplifying
3 + (x + 3) + 4x = 0

Reorder the terms:
3 + (3 + x) + 4x = 0

Remove parenthesis around (3 + x)
3 + 3 + x + 4x = 0

Combine like terms: 3 + 3 = 6
6 + x + 4x = 0

Combine like terms: x + 4x = 5x
6 + 5x = 0

Solving
6 + 5x = 0

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 + 5x = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 5x = 0 + -6
5x = 0 + -6

Combine like terms: 0 + -6 = -6
5x = -6

Divide each side by '5'.
x = -1.2

Simplifying
x = -1.2