d+3=2d-6

Solution for d+3=2d-6 equation:

Simplifying
d + 3 = 2d + -6

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

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

Solving
3 + d = -6 + 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
3 + d + -2d = -6 + 2d + -2d

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

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

Add '-3' to each side of the equation.
3 + -3 + -1d = -6 + -3

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

Combine like terms: -6 + -3 = -9
-1d = -9

Divide each side by '-1'.
d = 9

Simplifying
d = 9