-5(3-8k)=-21

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


Simplifying
-5(3 + -8k) = -21
(3 * -5 + -8k * -5) = -21
(-15 + 40k) = -21

Solving
-15 + 40k = -21

Solving for variable 'k'.

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

Add '15' to each side of the equation.
-15 + 15 + 40k = -21 + 15

Combine like terms: -15 + 15 = 0
0 + 40k = -21 + 15
40k = -21 + 15

Combine like terms: -21 + 15 = -6
40k = -6

Divide each side by '40'.
k = -0.15

Simplifying
k = -0.15

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