r-2=9

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Solution for r-2=9 equation: 


Simplifying
r + -2 = 9

Reorder the terms:
-2 + r = 9

Solving
-2 + r = 9

Solving for variable 'r'.

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

Add '2' to each side of the equation.
-2 + 2 + r = 9 + 2

Combine like terms: -2 + 2 = 0
0 + r = 9 + 2
r = 9 + 2

Combine like terms: 9 + 2 = 11
r = 11

Simplifying
r = 11

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