15+s=18

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Solution for 15+s=18 equation: 


Simplifying
15 + s = 18

Solving
15 + s = 18

Solving for variable 's'.

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

Add '-15' to each side of the equation.
15 + -15 + s = 18 + -15

Combine like terms: 15 + -15 = 0
0 + s = 18 + -15
s = 18 + -15

Combine like terms: 18 + -15 = 3
s = 3

Simplifying
s = 3

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