2k+1=21

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Solution for 2k+1=21 equation: 


Simplifying
2k + 1 = 21

Reorder the terms:
1 + 2k = 21

Solving
1 + 2k = 21

Solving for variable 'k'.

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

Add '-1' to each side of the equation.
1 + -1 + 2k = 21 + -1

Combine like terms: 1 + -1 = 0
0 + 2k = 21 + -1
2k = 21 + -1

Combine like terms: 21 + -1 = 20
2k = 20

Divide each side by '2'.
k = 10

Simplifying
k = 10

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