21=6(7k-2)

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Solution for 21=6(7k-2) equation:


Simplifying
21 = 6(7k + -2)

Reorder the terms:
21 = 6(-2 + 7k)
21 = (-2 * 6 + 7k * 6)
21 = (-12 + 42k)

Solving
21 = -12 + 42k

Solving for variable 'k'.

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

Add '-42k' to each side of the equation.
21 + -42k = -12 + 42k + -42k

Combine like terms: 42k + -42k = 0
21 + -42k = -12 + 0
21 + -42k = -12

Add '-21' to each side of the equation.
21 + -21 + -42k = -12 + -21

Combine like terms: 21 + -21 = 0
0 + -42k = -12 + -21
-42k = -12 + -21

Combine like terms: -12 + -21 = -33
-42k = -33

Divide each side by '-42'.
k = 0.7857142857

Simplifying
k = 0.7857142857

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