21+5k=8k

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Solution for 21+5k=8k equation:


Simplifying
21 + 5k = 8k

Solving
21 + 5k = 8k

Solving for variable 'k'.

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

Add '-8k' to each side of the equation.
21 + 5k + -8k = 8k + -8k

Combine like terms: 5k + -8k = -3k
21 + -3k = 8k + -8k

Combine like terms: 8k + -8k = 0
21 + -3k = 0

Add '-21' to each side of the equation.
21 + -21 + -3k = 0 + -21

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

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

Divide each side by '-3'.
k = 7

Simplifying
k = 7

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