(z+1)+z+1=0

Solution for (z+1)+z+1=0 equation:

Simplifying
(z + 1) + z + 1 = 0

Reorder the terms:
(1 + z) + z + 1 = 0

Remove parenthesis around (1 + z)
1 + z + z + 1 = 0

Reorder the terms:
1 + 1 + z + z = 0

Combine like terms: 1 + 1 = 2
2 + z + z = 0

Combine like terms: z + z = 2z
2 + 2z = 0

Solving
2 + 2z = 0

Solving for variable 'z'.

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

Add '-2' to each side of the equation.
2 + -2 + 2z = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 2z = 0 + -2
2z = 0 + -2

Combine like terms: 0 + -2 = -2
2z = -2

Divide each side by '2'.
z = -1

Simplifying
z = -1