2(k+8)=21

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Solution for 2(k+8)=21 equation: 


Simplifying
2(k + 8) = 21

Reorder the terms:
2(8 + k) = 21
(8 * 2 + k * 2) = 21
(16 + 2k) = 21

Solving
16 + 2k = 21

Solving for variable 'k'.

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

Add '-16' to each side of the equation.
16 + -16 + 2k = 21 + -16

Combine like terms: 16 + -16 = 0
0 + 2k = 21 + -16
2k = 21 + -16

Combine like terms: 21 + -16 = 5
2k = 5

Divide each side by '2'.
k = 2.5

Simplifying
k = 2.5

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