-7(k+8)=21

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Solution for -7(k+8)=21 equation: 


Simplifying
-7(k + 8) = 21

Reorder the terms:
-7(8 + k) = 21
(8 * -7 + k * -7) = 21
(-56 + -7k) = 21

Solving
-56 + -7k = 21

Solving for variable 'k'.

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

Add '56' to each side of the equation.
-56 + 56 + -7k = 21 + 56

Combine like terms: -56 + 56 = 0
0 + -7k = 21 + 56
-7k = 21 + 56

Combine like terms: 21 + 56 = 77
-7k = 77

Divide each side by '-7'.
k = -11

Simplifying
k = -11

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