86=7k+4(2-5k)

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Solution for 86=7k+4(2-5k) equation:


Simplifying
86 = 7k + 4(2 + -5k)
86 = 7k + (2 * 4 + -5k * 4)
86 = 7k + (8 + -20k)

Reorder the terms:
86 = 8 + 7k + -20k

Combine like terms: 7k + -20k = -13k
86 = 8 + -13k

Solving
86 = 8 + -13k

Solving for variable 'k'.

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

Add '13k' to each side of the equation.
86 + 13k = 8 + -13k + 13k

Combine like terms: -13k + 13k = 0
86 + 13k = 8 + 0
86 + 13k = 8

Add '-86' to each side of the equation.
86 + -86 + 13k = 8 + -86

Combine like terms: 86 + -86 = 0
0 + 13k = 8 + -86
13k = 8 + -86

Combine like terms: 8 + -86 = -78
13k = -78

Divide each side by '13'.
k = -6

Simplifying
k = -6

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