12d-9-5d=12d-9-4d

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Solution for 12d-9-5d=12d-9-4d equation:


Simplifying
12d + -9 + -5d = 12d + -9 + -4d

Reorder the terms:
-9 + 12d + -5d = 12d + -9 + -4d

Combine like terms: 12d + -5d = 7d
-9 + 7d = 12d + -9 + -4d

Reorder the terms:
-9 + 7d = -9 + 12d + -4d

Combine like terms: 12d + -4d = 8d
-9 + 7d = -9 + 8d

Add '9' to each side of the equation.
-9 + 9 + 7d = -9 + 9 + 8d

Combine like terms: -9 + 9 = 0
0 + 7d = -9 + 9 + 8d
7d = -9 + 9 + 8d

Combine like terms: -9 + 9 = 0
7d = 0 + 8d
7d = 8d

Solving
7d = 8d

Solving for variable 'd'.

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

Add '-8d' to each side of the equation.
7d + -8d = 8d + -8d

Combine like terms: 7d + -8d = -1d
-1d = 8d + -8d

Combine like terms: 8d + -8d = 0
-1d = 0

Divide each side by '-1'.
d = 0

Simplifying
d = 0

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