(k-4)=21

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Solution for (k-4)=21 equation: 


Simplifying
(k + -4) = 21

Reorder the terms:
(-4 + k) = 21

Remove parenthesis around (-4 + k)
-4 + k = 21

Solving
-4 + k = 21

Solving for variable 'k'.

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

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

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

Combine like terms: 21 + 4 = 25
k = 25

Simplifying
k = 25

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