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

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

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

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

Combine like terms: 14d + 2d = 16d
6 + 16d = -14

Solving
6 + 16d = -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 + 16d = -14 + -6

Combine like terms: 6 + -6 = 0
0 + 16d = -14 + -6
16d = -14 + -6

Combine like terms: -14 + -6 = -20
16d = -20

Divide each side by '16'.
d = -1.25

Simplifying
d = -1.25