-5k-5(k-8)=90

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Solution for -5k-5(k-8)=90 equation:


Simplifying
-5k + -5(k + -8) = 90

Reorder the terms:
-5k + -5(-8 + k) = 90
-5k + (-8 * -5 + k * -5) = 90
-5k + (40 + -5k) = 90

Reorder the terms:
40 + -5k + -5k = 90

Combine like terms: -5k + -5k = -10k
40 + -10k = 90

Solving
40 + -10k = 90

Solving for variable 'k'.

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

Add '-40' to each side of the equation.
40 + -40 + -10k = 90 + -40

Combine like terms: 40 + -40 = 0
0 + -10k = 90 + -40
-10k = 90 + -40

Combine like terms: 90 + -40 = 50
-10k = 50

Divide each side by '-10'.
k = -5

Simplifying
k = -5

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