-87=-3(7k+8)

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Solution for -87=-3(7k+8) equation:


Simplifying
-87 = -3(7k + 8)

Reorder the terms:
-87 = -3(8 + 7k)
-87 = (8 * -3 + 7k * -3)
-87 = (-24 + -21k)

Solving
-87 = -24 + -21k

Solving for variable 'k'.

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

Add '21k' to each side of the equation.
-87 + 21k = -24 + -21k + 21k

Combine like terms: -21k + 21k = 0
-87 + 21k = -24 + 0
-87 + 21k = -24

Add '87' to each side of the equation.
-87 + 87 + 21k = -24 + 87

Combine like terms: -87 + 87 = 0
0 + 21k = -24 + 87
21k = -24 + 87

Combine like terms: -24 + 87 = 63
21k = 63

Divide each side by '21'.
k = 3

Simplifying
k = 3

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