-21-7k=7(-6k-8)

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Solution for -21-7k=7(-6k-8) equation:


Simplifying
-21 + -7k = 7(-6k + -8)

Reorder the terms:
-21 + -7k = 7(-8 + -6k)
-21 + -7k = (-8 * 7 + -6k * 7)
-21 + -7k = (-56 + -42k)

Solving
-21 + -7k = -56 + -42k

Solving for variable 'k'.

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

Add '42k' to each side of the equation.
-21 + -7k + 42k = -56 + -42k + 42k

Combine like terms: -7k + 42k = 35k
-21 + 35k = -56 + -42k + 42k

Combine like terms: -42k + 42k = 0
-21 + 35k = -56 + 0
-21 + 35k = -56

Add '21' to each side of the equation.
-21 + 21 + 35k = -56 + 21

Combine like terms: -21 + 21 = 0
0 + 35k = -56 + 21
35k = -56 + 21

Combine like terms: -56 + 21 = -35
35k = -35

Divide each side by '35'.
k = -1

Simplifying
k = -1

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