-42.5+86=k

Solution for -42.5+86=k equation:

Simplifying
-42.5 + 86 = k

Combine like terms: -42.5 + 86 = 43.5
43.5 = k

Solving
43.5 = k

Solving for variable 'k'.

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

Add '-1k' to each side of the equation.
43.5 + -1k = k + -1k

Combine like terms: k + -1k = 0
43.5 + -1k = 0

Add '-43.5' to each side of the equation.
43.5 + -43.5 + -1k = 0 + -43.5

Combine like terms: 43.5 + -43.5 = 0.0
0.0 + -1k = 0 + -43.5
-1k = 0 + -43.5

Combine like terms: 0 + -43.5 = -43.5
-1k = -43.5

Divide each side by '-1'.
k = 43.5

Simplifying
k = 43.5