21=k+17

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Solution for 21=k+17 equation:


Simplifying
21 = k + 17

Reorder the terms:
21 = 17 + k

Solving
21 = 17 + k

Solving for variable 'k'.

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

Add '-1k' to each side of the equation.
21 + -1k = 17 + k + -1k

Combine like terms: k + -1k = 0
21 + -1k = 17 + 0
21 + -1k = 17

Add '-21' to each side of the equation.
21 + -21 + -1k = 17 + -21

Combine like terms: 21 + -21 = 0
0 + -1k = 17 + -21
-1k = 17 + -21

Combine like terms: 17 + -21 = -4
-1k = -4

Divide each side by '-1'.
k = 4

Simplifying
k = 4

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