8k-13=-21

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Solution for 8k-13=-21 equation: 


Simplifying
8k + -13 = -21

Reorder the terms:
-13 + 8k = -21

Solving
-13 + 8k = -21

Solving for variable 'k'.

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

Add '13' to each side of the equation.
-13 + 13 + 8k = -21 + 13

Combine like terms: -13 + 13 = 0
0 + 8k = -21 + 13
8k = -21 + 13

Combine like terms: -21 + 13 = -8
8k = -8

Divide each side by '8'.
k = -1

Simplifying
k = -1

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