-d-2(d+3)=0

Solution for -d-2(d+3)=0 equation:

Simplifying
-1d + -2(d + 3) = 0

Reorder the terms:
-1d + -2(3 + d) = 0
-1d + (3 * -2 + d * -2) = 0
-1d + (-6 + -2d) = 0

Reorder the terms:
-6 + -1d + -2d = 0

Combine like terms: -1d + -2d = -3d
-6 + -3d = 0

Solving
-6 + -3d = 0

Solving for variable 'd'.

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

Add '6' to each side of the equation.
-6 + 6 + -3d = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -3d = 0 + 6
-3d = 0 + 6

Combine like terms: 0 + 6 = 6
-3d = 6

Divide each side by '-3'.
d = -2

Simplifying
d = -2