3k-7k=-9-k

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Solution for 3k-7k=-9-k equation: 


Simplifying
3k + -7k = -9 + -1k

Combine like terms: 3k + -7k = -4k
-4k = -9 + -1k

Solving
-4k = -9 + -1k

Solving for variable 'k'.

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

Add 'k' to each side of the equation.
-4k + k = -9 + -1k + k

Combine like terms: -4k + k = -3k
-3k = -9 + -1k + k

Combine like terms: -1k + k = 0
-3k = -9 + 0
-3k = -9

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

Simplifying
k = 3

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