3(4+7k)=-135

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Solution for 3(4+7k)=-135 equation: 


Simplifying
3(4 + 7k) = -135
(4 * 3 + 7k * 3) = -135
(12 + 21k) = -135

Solving
12 + 21k = -135

Solving for variable 'k'.

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

Add '-12' to each side of the equation.
12 + -12 + 21k = -135 + -12

Combine like terms: 12 + -12 = 0
0 + 21k = -135 + -12
21k = -135 + -12

Combine like terms: -135 + -12 = -147
21k = -147

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

Simplifying
k = -7

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