100-5k-20=7k-20

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Solution for 100-5k-20=7k-20 equation:


Simplifying
100 + -5k + -20 = 7k + -20

Reorder the terms:
100 + -20 + -5k = 7k + -20

Combine like terms: 100 + -20 = 80
80 + -5k = 7k + -20

Reorder the terms:
80 + -5k = -20 + 7k

Solving
80 + -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.
80 + -5k + -7k = -20 + 7k + -7k

Combine like terms: -5k + -7k = -12k
80 + -12k = -20 + 7k + -7k

Combine like terms: 7k + -7k = 0
80 + -12k = -20 + 0
80 + -12k = -20

Add '-80' to each side of the equation.
80 + -80 + -12k = -20 + -80

Combine like terms: 80 + -80 = 0
0 + -12k = -20 + -80
-12k = -20 + -80

Combine like terms: -20 + -80 = -100
-12k = -100

Divide each side by '-12'.
k = 8.333333333

Simplifying
k = 8.333333333

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