6=3(d-7)

Solution for 6=3(d-7) equation:

Simplifying
6 = 3(d + -7)

Reorder the terms:
6 = 3(-7 + d)
6 = (-7 * 3 + d * 3)
6 = (-21 + 3d)

Solving
6 = -21 + 3d

Solving for variable 'd'.

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

Add '-3d' to each side of the equation.
6 + -3d = -21 + 3d + -3d

Combine like terms: 3d + -3d = 0
6 + -3d = -21 + 0
6 + -3d = -21

Add '-6' to each side of the equation.
6 + -6 + -3d = -21 + -6

Combine like terms: 6 + -6 = 0
0 + -3d = -21 + -6
-3d = -21 + -6

Combine like terms: -21 + -6 = -27
-3d = -27

Divide each side by '-3'.
d = 9

Simplifying
d = 9