k-1-5k=-21

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Solution for k-1-5k=-21 equation:


Simplifying
k + -1 + -5k = -21

Reorder the terms:
-1 + k + -5k = -21

Combine like terms: k + -5k = -4k
-1 + -4k = -21

Solving
-1 + -4k = -21

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 + -4k = -21 + 1

Combine like terms: -1 + 1 = 0
0 + -4k = -21 + 1
-4k = -21 + 1

Combine like terms: -21 + 1 = -20
-4k = -20

Divide each side by '-4'.
k = 5

Simplifying
k = 5

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