12k-[2k+(-3+7k)]=

Solution for 12k-[2k+(-3+7k)]= equation:

Simplifying
12k + -1[2k + (-3 + 7k)] = 0

Remove parenthesis around (-3 + 7k)
12k + -1[2k + -3 + 7k] = 0

Reorder the terms:
12k + -1[-3 + 2k + 7k] = 0

Combine like terms: 2k + 7k = 9k
12k + -1[-3 + 9k] = 0
12k + [-3 * -1 + 9k * -1] = 0
12k + [3 + -9k] = 0

Reorder the terms:
3 + 12k + -9k = 0

Combine like terms: 12k + -9k = 3k
3 + 3k = 0

Solving
3 + 3k = 0

Solving for variable 'k'.

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

Add '-3' to each side of the equation.
3 + -3 + 3k = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 3k = 0 + -3
3k = 0 + -3

Combine like terms: 0 + -3 = -3
3k = -3

Divide each side by '3'.
k = -1

Simplifying
k = -1