2k-2k+4k+k-1=9

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Solution for 2k-2k+4k+k-1=9 equation:


Simplifying
2k + -2k + 4k + k + -1 = 9

Reorder the terms:
-1 + 2k + -2k + 4k + k = 9

Combine like terms: 2k + -2k = 0
-1 + 0 + 4k + k = 9
-1 + 4k + k = 9

Combine like terms: 4k + k = 5k
-1 + 5k = 9

Solving
-1 + 5k = 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 + 5k = 9 + 1

Combine like terms: -1 + 1 = 0
0 + 5k = 9 + 1
5k = 9 + 1

Combine like terms: 9 + 1 = 10
5k = 10

Divide each side by '5'.
k = 2

Simplifying
k = 2

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