-18=9+4(k-5)

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Solution for -18=9+4(k-5) equation:


Simplifying
-18 = 9 + 4(k + -5)

Reorder the terms:
-18 = 9 + 4(-5 + k)
-18 = 9 + (-5 * 4 + k * 4)
-18 = 9 + (-20 + 4k)

Combine like terms: 9 + -20 = -11
-18 = -11 + 4k

Solving
-18 = -11 + 4k

Solving for variable 'k'.

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

Add '-4k' to each side of the equation.
-18 + -4k = -11 + 4k + -4k

Combine like terms: 4k + -4k = 0
-18 + -4k = -11 + 0
-18 + -4k = -11

Add '18' to each side of the equation.
-18 + 18 + -4k = -11 + 18

Combine like terms: -18 + 18 = 0
0 + -4k = -11 + 18
-4k = -11 + 18

Combine like terms: -11 + 18 = 7
-4k = 7

Divide each side by '-4'.
k = -1.75

Simplifying
k = -1.75

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