12k+3k-6k-9k+3k=18

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Solution for 12k+3k-6k-9k+3k=18 equation: 


Simplifying
12k + 3k + -6k + -9k + 3k = 18

Combine like terms: 12k + 3k = 15k
15k + -6k + -9k + 3k = 18

Combine like terms: 15k + -6k = 9k
9k + -9k + 3k = 18

Combine like terms: 9k + -9k = 0
0 + 3k = 18
3k = 18

Solving
3k = 18

Solving for variable 'k'.

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

Divide each side by '3'.
k = 6

Simplifying
k = 6

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