r+8=-12-1

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Solution for r+8=-12-1 equation: 


Simplifying
r + 8 = -12 + -1

Reorder the terms:
8 + r = -12 + -1

Combine like terms: -12 + -1 = -13
8 + r = -13

Solving
8 + r = -13

Solving for variable 'r'.

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

Add '-8' to each side of the equation.
8 + -8 + r = -13 + -8

Combine like terms: 8 + -8 = 0
0 + r = -13 + -8
r = -13 + -8

Combine like terms: -13 + -8 = -21
r = -21

Simplifying
r = -21

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