12+7d=d-6

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Solution for 12+7d=d-6 equation:


Simplifying
12 + 7d = d + -6

Reorder the terms:
12 + 7d = -6 + d

Solving
12 + 7d = -6 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
12 + 7d + -1d = -6 + d + -1d

Combine like terms: 7d + -1d = 6d
12 + 6d = -6 + d + -1d

Combine like terms: d + -1d = 0
12 + 6d = -6 + 0
12 + 6d = -6

Add '-12' to each side of the equation.
12 + -12 + 6d = -6 + -12

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

Combine like terms: -6 + -12 = -18
6d = -18

Divide each side by '6'.
d = -3

Simplifying
d = -3

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