21=6k-2+5

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Solution for 21=6k-2+5 equation:


Simplifying
21 = 6k + -2 + 5

Reorder the terms:
21 = -2 + 5 + 6k

Combine like terms: -2 + 5 = 3
21 = 3 + 6k

Solving
21 = 3 + 6k

Solving for variable 'k'.

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

Add '-6k' to each side of the equation.
21 + -6k = 3 + 6k + -6k

Combine like terms: 6k + -6k = 0
21 + -6k = 3 + 0
21 + -6k = 3

Add '-21' to each side of the equation.
21 + -21 + -6k = 3 + -21

Combine like terms: 21 + -21 = 0
0 + -6k = 3 + -21
-6k = 3 + -21

Combine like terms: 3 + -21 = -18
-6k = -18

Divide each side by '-6'.
k = 3

Simplifying
k = 3

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