2k-k-1=9

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Solution for 2k-k-1=9 equation:


Simplifying
2k + -1k + -1 = 9

Reorder the terms:
-1 + 2k + -1k = 9

Combine like terms: 2k + -1k = 1k
-1 + 1k = 9

Solving
-1 + 1k = 9

Solving for variable 'k'.

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

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

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

Combine like terms: 9 + 1 = 10
1k = 10

Divide each side by '1'.
k = 10

Simplifying
k = 10

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