-30=42+k

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Solution for -30=42+k equation:


Simplifying
-30 = 42 + k

Solving
-30 = 42 + 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.
-30 + -1k = 42 + k + -1k

Combine like terms: k + -1k = 0
-30 + -1k = 42 + 0
-30 + -1k = 42

Add '30' to each side of the equation.
-30 + 30 + -1k = 42 + 30

Combine like terms: -30 + 30 = 0
0 + -1k = 42 + 30
-1k = 42 + 30

Combine like terms: 42 + 30 = 72
-1k = 72

Divide each side by '-1'.
k = -72

Simplifying
k = -72

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