2-10k+1=-78

Solution for 2-10k+1=-78 equation:

Simplifying
2 + -10k + 1 = -78

Reorder the terms:
2 + 1 + -10k = -78

Combine like terms: 2 + 1 = 3
3 + -10k = -78

Solving
3 + -10k = -78

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 + -10k = -78 + -3

Combine like terms: 3 + -3 = 0
0 + -10k = -78 + -3
-10k = -78 + -3

Combine like terms: -78 + -3 = -81
-10k = -81

Divide each side by '-10'.
k = 8.1

Simplifying
k = 8.1