81-s=2s

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Solution for 81-s=2s equation:


Simplifying
81 + -1s = 2s

Solving
81 + -1s = 2s

Solving for variable 's'.

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

Add '-2s' to each side of the equation.
81 + -1s + -2s = 2s + -2s

Combine like terms: -1s + -2s = -3s
81 + -3s = 2s + -2s

Combine like terms: 2s + -2s = 0
81 + -3s = 0

Add '-81' to each side of the equation.
81 + -81 + -3s = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -3s = 0 + -81
-3s = 0 + -81

Combine like terms: 0 + -81 = -81
-3s = -81

Divide each side by '-3'.
s = 27

Simplifying
s = 27

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