d-3-9=-12

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Solution for d-3-9=-12 equation: 


Simplifying
d + -3 + -9 = -12

Reorder the terms:
-3 + -9 + d = -12

Combine like terms: -3 + -9 = -12
-12 + d = -12

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

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

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

Solving
d = 0

Solving for variable 'd'.

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

Simplifying
d = 0

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