3(7-7k)=-105

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Solution for 3(7-7k)=-105 equation: 


Simplifying
3(7 + -7k) = -105
(7 * 3 + -7k * 3) = -105
(21 + -21k) = -105

Solving
21 + -21k = -105

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 = -105 + -21

Combine like terms: 21 + -21 = 0
0 + -21k = -105 + -21
-21k = -105 + -21

Combine like terms: -105 + -21 = -126
-21k = -126

Divide each side by '-21'.
k = 6

Simplifying
k = 6

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