4k+21=1

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Solution for 4k+21=1 equation: 


Simplifying
4k + 21 = 1

Reorder the terms:
21 + 4k = 1

Solving
21 + 4k = 1

Solving for variable 'k'.

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

Add '-21' to each side of the equation.
21 + -21 + 4k = 1 + -21

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

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

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

Simplifying
k = -5

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