84=-7(k-4)

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Solution for 84=-7(k-4) equation:


Simplifying
84 = -7(k + -4)

Reorder the terms:
84 = -7(-4 + k)
84 = (-4 * -7 + k * -7)
84 = (28 + -7k)

Solving
84 = 28 + -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.
84 + 7k = 28 + -7k + 7k

Combine like terms: -7k + 7k = 0
84 + 7k = 28 + 0
84 + 7k = 28

Add '-84' to each side of the equation.
84 + -84 + 7k = 28 + -84

Combine like terms: 84 + -84 = 0
0 + 7k = 28 + -84
7k = 28 + -84

Combine like terms: 28 + -84 = -56
7k = -56

Divide each side by '7'.
k = -8

Simplifying
k = -8

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