31=72-k

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Solution for 31=72-k equation:


Simplifying
31 = 72 + -1k

Solving
31 = 72 + -1k

Solving for variable 'k'.

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

Add 'k' to each side of the equation.
31 + k = 72 + -1k + k

Combine like terms: -1k + k = 0
31 + k = 72 + 0
31 + k = 72

Add '-31' to each side of the equation.
31 + -31 + k = 72 + -31

Combine like terms: 31 + -31 = 0
0 + k = 72 + -31
k = 72 + -31

Combine like terms: 72 + -31 = 41
k = 41

Simplifying
k = 41

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