3(7k-8)=81

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Solution for 3(7k-8)=81 equation:


Simplifying
3(7k + -8) = 81

Reorder the terms:
3(-8 + 7k) = 81
(-8 * 3 + 7k * 3) = 81
(-24 + 21k) = 81

Solving
-24 + 21k = 81

Solving for variable 'k'.

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

Add '24' to each side of the equation.
-24 + 24 + 21k = 81 + 24

Combine like terms: -24 + 24 = 0
0 + 21k = 81 + 24
21k = 81 + 24

Combine like terms: 81 + 24 = 105
21k = 105

Divide each side by '21'.
k = 5

Simplifying
k = 5

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