9-r=-2

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Solution for 9-r=-2 equation: 


Simplifying
9 + -1r = -2

Solving
9 + -1r = -2

Solving for variable 'r'.

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

Add '-9' to each side of the equation.
9 + -9 + -1r = -2 + -9

Combine like terms: 9 + -9 = 0
0 + -1r = -2 + -9
-1r = -2 + -9

Combine like terms: -2 + -9 = -11
-1r = -11

Divide each side by '-1'.
r = 11

Simplifying
r = 11

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