-42+k=k-4k

Solution for -42+k=k-4k equation:

Simplifying
-42 + k = k + -4k

Combine like terms: k + -4k = -3k
-42 + k = -3k

Solving
-42 + k = -3k

Solving for variable 'k'.

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

Add '3k' to each side of the equation.
-42 + k + 3k = -3k + 3k

Combine like terms: k + 3k = 4k
-42 + 4k = -3k + 3k

Combine like terms: -3k + 3k = 0
-42 + 4k = 0

Add '42' to each side of the equation.
-42 + 42 + 4k = 0 + 42

Combine like terms: -42 + 42 = 0
0 + 4k = 0 + 42
4k = 0 + 42

Combine like terms: 0 + 42 = 42
4k = 42

Divide each side by '4'.
k = 10.5

Simplifying
k = 10.5