12+S=20

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Solution for 12+S=20 equation: 


Simplifying
12 + S = 20

Solving
12 + S = 20

Solving for variable 'S'.

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

Add '-12' to each side of the equation.
12 + -12 + S = 20 + -12

Combine like terms: 12 + -12 = 0
0 + S = 20 + -12
S = 20 + -12

Combine like terms: 20 + -12 = 8
S = 8

Simplifying
S = 8

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