4(k-1)=20

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Solution for 4(k-1)=20 equation: 


Simplifying
4(k + -1) = 20

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

Solving
-4 + 4k = 20

Solving for variable 'k'.

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

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

Combine like terms: -4 + 4 = 0
0 + 4k = 20 + 4
4k = 20 + 4

Combine like terms: 20 + 4 = 24
4k = 24

Divide each side by '4'.
k = 6

Simplifying
k = 6

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