128-5k=7k+20

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Solution for 128-5k=7k+20 equation:


Simplifying
128 + -5k = 7k + 20

Reorder the terms:
128 + -5k = 20 + 7k

Solving
128 + -5k = 20 + 7k

Solving for variable 'k'.

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

Add '-7k' to each side of the equation.
128 + -5k + -7k = 20 + 7k + -7k

Combine like terms: -5k + -7k = -12k
128 + -12k = 20 + 7k + -7k

Combine like terms: 7k + -7k = 0
128 + -12k = 20 + 0
128 + -12k = 20

Add '-128' to each side of the equation.
128 + -128 + -12k = 20 + -128

Combine like terms: 128 + -128 = 0
0 + -12k = 20 + -128
-12k = 20 + -128

Combine like terms: 20 + -128 = -108
-12k = -108

Divide each side by '-12'.
k = 9

Simplifying
k = 9

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