s-9=r

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Solution for s-9=r equation: 


Simplifying
s + -9 = r

Reorder the terms:
-9 + s = r

Solving
-9 + s = r

Solving for variable 's'.

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

Add '9' to each side of the equation.
-9 + 9 + s = 9 + r

Combine like terms: -9 + 9 = 0
0 + s = 9 + r
s = 9 + r

Simplifying
s = 9 + r

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