s+81=2s

Solution for s+81=2s equation:

Simplifying
s + 81 = 2s

Reorder the terms:
81 + s = 2s

Solving
81 + s = 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 + s + -2s = 2s + -2s

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

Combine like terms: 2s + -2s = 0
81 + -1s = 0

Add '-81' to each side of the equation.
81 + -81 + -1s = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -1s = 0 + -81
-1s = 0 + -81

Combine like terms: 0 + -81 = -81
-1s = -81

Divide each side by '-1'.
s = 81

Simplifying
s = 81