28=-1(k-1)+4(6k+1)

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Solution for 28=-1(k-1)+4(6k+1) equation:


Simplifying
28 = -1(k + -1) + 4(6k + 1)

Reorder the terms:
28 = -1(-1 + k) + 4(6k + 1)
28 = (-1 * -1 + k * -1) + 4(6k + 1)
28 = (1 + -1k) + 4(6k + 1)

Reorder the terms:
28 = 1 + -1k + 4(1 + 6k)
28 = 1 + -1k + (1 * 4 + 6k * 4)
28 = 1 + -1k + (4 + 24k)

Reorder the terms:
28 = 1 + 4 + -1k + 24k

Combine like terms: 1 + 4 = 5
28 = 5 + -1k + 24k

Combine like terms: -1k + 24k = 23k
28 = 5 + 23k

Solving
28 = 5 + 23k

Solving for variable 'k'.

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

Add '-23k' to each side of the equation.
28 + -23k = 5 + 23k + -23k

Combine like terms: 23k + -23k = 0
28 + -23k = 5 + 0
28 + -23k = 5

Add '-28' to each side of the equation.
28 + -28 + -23k = 5 + -28

Combine like terms: 28 + -28 = 0
0 + -23k = 5 + -28
-23k = 5 + -28

Combine like terms: 5 + -28 = -23
-23k = -23

Divide each side by '-23'.
k = 1

Simplifying
k = 1

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