6k-9=12

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Solution for 6k-9=12 equation: 


Simplifying
6k + -9 = 12

Reorder the terms:
-9 + 6k = 12

Solving
-9 + 6k = 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 + 6k = 12 + 9

Combine like terms: -9 + 9 = 0
0 + 6k = 12 + 9
6k = 12 + 9

Combine like terms: 12 + 9 = 21
6k = 21

Divide each side by '6'.
k = 3.5

Simplifying
k = 3.5

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