4(-k-5)=-9k

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Solution for 4(-k-5)=-9k equation:


Simplifying
4(-1k + -5) = -9k

Reorder the terms:
4(-5 + -1k) = -9k
(-5 * 4 + -1k * 4) = -9k
(-20 + -4k) = -9k

Solving
-20 + -4k = -9k

Solving for variable 'k'.

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

Add '9k' to each side of the equation.
-20 + -4k + 9k = -9k + 9k

Combine like terms: -4k + 9k = 5k
-20 + 5k = -9k + 9k

Combine like terms: -9k + 9k = 0
-20 + 5k = 0

Add '20' to each side of the equation.
-20 + 20 + 5k = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 5k = 0 + 20
5k = 0 + 20

Combine like terms: 0 + 20 = 20
5k = 20

Divide each side by '5'.
k = 4

Simplifying
k = 4

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