k-3=12

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Solution for k-3=12 equation: 


Simplifying
k + -3 = 12

Reorder the terms:
-3 + k = 12

Solving
-3 + k = 12

Solving for variable 'k'.

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

Add '3' to each side of the equation.
-3 + 3 + k = 12 + 3

Combine like terms: -3 + 3 = 0
0 + k = 12 + 3
k = 12 + 3

Combine like terms: 12 + 3 = 15
k = 15

Simplifying
k = 15

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