k+21=3

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Solution for k+21=3 equation: 


Simplifying
k + 21 = 3

Reorder the terms:
21 + k = 3

Solving
21 + k = 3

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 + k = 3 + -21

Combine like terms: 21 + -21 = 0
0 + k = 3 + -21
k = 3 + -21

Combine like terms: 3 + -21 = -18
k = -18

Simplifying
k = -18

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