r+(-9)=-11

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Solution for r+(-9)=-11 equation:


Simplifying
r + (-9) = -11
r + -9 = -11

Reorder the terms:
-9 + r = -11

Solving
-9 + r = -11

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 + r = -11 + 9

Combine like terms: -9 + 9 = 0
0 + r = -11 + 9
r = -11 + 9

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

Simplifying
r = -2

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