r-13=-2

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Solution for r-13=-2 equation: 


Simplifying
r + -13 = -2

Reorder the terms:
-13 + r = -2

Solving
-13 + r = -2

Solving for variable 'r'.

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

Add '13' to each side of the equation.
-13 + 13 + r = -2 + 13

Combine like terms: -13 + 13 = 0
0 + r = -2 + 13
r = -2 + 13

Combine like terms: -2 + 13 = 11
r = 11

Simplifying
r = 11

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