-3(7+7k)=-168

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Solution for -3(7+7k)=-168 equation: 


Simplifying
-3(7 + 7k) = -168
(7 * -3 + 7k * -3) = -168
(-21 + -21k) = -168

Solving
-21 + -21k = -168

Solving for variable 'k'.

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

Add '21' to each side of the equation.
-21 + 21 + -21k = -168 + 21

Combine like terms: -21 + 21 = 0
0 + -21k = -168 + 21
-21k = -168 + 21

Combine like terms: -168 + 21 = -147
-21k = -147

Divide each side by '-21'.
k = 7

Simplifying
k = 7

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