-21=-8(9k+5)

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Solution for -21=-8(9k+5) equation:


Simplifying
-21 = -8(9k + 5)

Reorder the terms:
-21 = -8(5 + 9k)
-21 = (5 * -8 + 9k * -8)
-21 = (-40 + -72k)

Solving
-21 = -40 + -72k

Solving for variable 'k'.

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

Add '72k' to each side of the equation.
-21 + 72k = -40 + -72k + 72k

Combine like terms: -72k + 72k = 0
-21 + 72k = -40 + 0
-21 + 72k = -40

Add '21' to each side of the equation.
-21 + 21 + 72k = -40 + 21

Combine like terms: -21 + 21 = 0
0 + 72k = -40 + 21
72k = -40 + 21

Combine like terms: -40 + 21 = -19
72k = -19

Divide each side by '72'.
k = -0.2638888889

Simplifying
k = -0.2638888889

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