4d+2(3+d)=-14

Solution for 4d+2(3+d)=-14 equation:

Simplifying
4d + 2(3 + d) = -14
4d + (3 * 2 + d * 2) = -14
4d + (6 + 2d) = -14

Reorder the terms:
6 + 4d + 2d = -14

Combine like terms: 4d + 2d = 6d
6 + 6d = -14

Solving
6 + 6d = -14

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 + 6d = -14 + -6

Combine like terms: 6 + -6 = 0
0 + 6d = -14 + -6
6d = -14 + -6

Combine like terms: -14 + -6 = -20
6d = -20

Divide each side by '6'.
d = -3.333333333

Simplifying
d = -3.333333333