-5(k-5)-7k=121

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Solution for -5(k-5)-7k=121 equation:


Simplifying
-5(k + -5) + -7k = 121

Reorder the terms:
-5(-5 + k) + -7k = 121
(-5 * -5 + k * -5) + -7k = 121
(25 + -5k) + -7k = 121

Combine like terms: -5k + -7k = -12k
25 + -12k = 121

Solving
25 + -12k = 121

Solving for variable 'k'.

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

Add '-25' to each side of the equation.
25 + -25 + -12k = 121 + -25

Combine like terms: 25 + -25 = 0
0 + -12k = 121 + -25
-12k = 121 + -25

Combine like terms: 121 + -25 = 96
-12k = 96

Divide each side by '-12'.
k = -8

Simplifying
k = -8

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