2(d+3)+d=12solve

Solution for 2(d+3)+d=12solve equation:

Simplifying
2(d + 3) + d = 12solve

Reorder the terms:
2(3 + d) + d = 12solve
(3 * 2 + d * 2) + d = 12solve
(6 + 2d) + d = 12solve

Combine like terms: 2d + d = 3d
6 + 3d = 12solve

Solving
6 + 3d = 12elosv

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 = -6 + 12elosv

Combine like terms: 6 + -6 = 0
0 + 3d = -6 + 12elosv
3d = -6 + 12elosv

Divide each side by '3'.
d = -2 + 4elosv

Simplifying
d = -2 + 4elosv