r+5=-8

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Solution for r+5=-8 equation: 


Simplifying
r + 5 = -8

Reorder the terms:
5 + r = -8

Solving
5 + r = -8

Solving for variable 'r'.

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

Add '-5' to each side of the equation.
5 + -5 + r = -8 + -5

Combine like terms: 5 + -5 = 0
0 + r = -8 + -5
r = -8 + -5

Combine like terms: -8 + -5 = -13
r = -13

Simplifying
r = -13

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