5k-21=-3(k-8)

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Solution for 5k-21=-3(k-8) equation:


Simplifying
5k + -21 = -3(k + -8)

Reorder the terms:
-21 + 5k = -3(k + -8)

Reorder the terms:
-21 + 5k = -3(-8 + k)
-21 + 5k = (-8 * -3 + k * -3)
-21 + 5k = (24 + -3k)

Solving
-21 + 5k = 24 + -3k

Solving for variable 'k'.

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

Add '3k' to each side of the equation.
-21 + 5k + 3k = 24 + -3k + 3k

Combine like terms: 5k + 3k = 8k
-21 + 8k = 24 + -3k + 3k

Combine like terms: -3k + 3k = 0
-21 + 8k = 24 + 0
-21 + 8k = 24

Add '21' to each side of the equation.
-21 + 21 + 8k = 24 + 21

Combine like terms: -21 + 21 = 0
0 + 8k = 24 + 21
8k = 24 + 21

Combine like terms: 24 + 21 = 45
8k = 45

Divide each side by '8'.
k = 5.625

Simplifying
k = 5.625

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