21+s=6

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Solution for 21+s=6 equation: 


Simplifying
21 + s = 6

Solving
21 + s = 6

Solving for variable 's'.

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

Add '-21' to each side of the equation.
21 + -21 + s = 6 + -21

Combine like terms: 21 + -21 = 0
0 + s = 6 + -21
s = 6 + -21

Combine like terms: 6 + -21 = -15
s = -15

Simplifying
s = -15

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