18-s=31

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Solution for 18-s=31 equation: 


Simplifying
18 + -1s = 31

Solving
18 + -1s = 31

Solving for variable 's'.

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

Add '-18' to each side of the equation.
18 + -18 + -1s = 31 + -18

Combine like terms: 18 + -18 = 0
0 + -1s = 31 + -18
-1s = 31 + -18

Combine like terms: 31 + -18 = 13
-1s = 13

Divide each side by '-1'.
s = -13

Simplifying
s = -13

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