2d-12=9+3

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Solution for 2d-12=9+3 equation:


Simplifying
2d + -12 = 9 + 3

Reorder the terms:
-12 + 2d = 9 + 3

Combine like terms: 9 + 3 = 12
-12 + 2d = 12

Solving
-12 + 2d = 12

Solving for variable 'd'.

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

Add '12' to each side of the equation.
-12 + 12 + 2d = 12 + 12

Combine like terms: -12 + 12 = 0
0 + 2d = 12 + 12
2d = 12 + 12

Combine like terms: 12 + 12 = 24
2d = 24

Divide each side by '2'.
d = 12

Simplifying
d = 12

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