d+4=12

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Solution for d+4=12 equation: 


Simplifying
d + 4 = 12

Reorder the terms:
4 + d = 12

Solving
4 + d = 12

Solving for variable 'd'.

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

Add '-4' to each side of the equation.
4 + -4 + d = 12 + -4

Combine like terms: 4 + -4 = 0
0 + d = 12 + -4
d = 12 + -4

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

Simplifying
d = 8

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