-9+10k=21

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Solution for -9+10k=21 equation: 


Simplifying
-9 + 10k = 21

Solving
-9 + 10k = 21

Solving for variable 'k'.

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

Add '9' to each side of the equation.
-9 + 9 + 10k = 21 + 9

Combine like terms: -9 + 9 = 0
0 + 10k = 21 + 9
10k = 21 + 9

Combine like terms: 21 + 9 = 30
10k = 30

Divide each side by '10'.
k = 3

Simplifying
k = 3

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