9-k=12

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Solution for 9-k=12 equation: 


Simplifying
9 + -1k = 12

Solving
9 + -1k = 12

Solving for variable 'k'.

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

Add '-9' to each side of the equation.
9 + -9 + -1k = 12 + -9

Combine like terms: 9 + -9 = 0
0 + -1k = 12 + -9
-1k = 12 + -9

Combine like terms: 12 + -9 = 3
-1k = 3

Divide each side by '-1'.
k = -3

Simplifying
k = -3

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