-12d+3+14d+18=

Solution for -12d+3+14d+18= equation:

Simplifying
-12d + 3 + 14d + 18 = 0

Reorder the terms:
3 + 18 + -12d + 14d = 0

Combine like terms: 3 + 18 = 21
21 + -12d + 14d = 0

Combine like terms: -12d + 14d = 2d
21 + 2d = 0

Solving
21 + 2d = 0

Solving for variable 'd'.

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

Add '-21' to each side of the equation.
21 + -21 + 2d = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 2d = 0 + -21
2d = 0 + -21

Combine like terms: 0 + -21 = -21
2d = -21

Divide each side by '2'.
d = -10.5

Simplifying
d = -10.5