(2i)+(2i)-(-1-i)=

Solution for (2i)+(2i)-(-1-i)= equation:

Simplifying
(2i) + (2i) + -1(-1 + -1i) = 0
(2i) + (2i) + (-1 * -1 + -1i * -1) = 0
(2i) + (2i) + (1 + 1i) = 0

Reorder the terms:
1 + (2i) + (2i) + 1i = 0

Combine like terms: (2i) + (2i) = 4i
1 + 4i + 1i = 0

Combine like terms: 4i + 1i = 5i
1 + 5i = 0

Solving
1 + 5i = 0

Solving for variable 'i'.

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

Add '-1' to each side of the equation.
1 + -1 + 5i = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 5i = 0 + -1
5i = 0 + -1

Combine like terms: 0 + -1 = -1
5i = -1

Divide each side by '5'.
i = -0.2

Simplifying
i = -0.2