S-3=18

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Solution for S-3=18 equation: 


Simplifying
S + -3 = 18

Reorder the terms:
-3 + S = 18

Solving
-3 + S = 18

Solving for variable 'S'.

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

Add '3' to each side of the equation.
-3 + 3 + S = 18 + 3

Combine like terms: -3 + 3 = 0
0 + S = 18 + 3
S = 18 + 3

Combine like terms: 18 + 3 = 21
S = 21

Simplifying
S = 21

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