-r=5-8

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Solution for -r=5-8 equation: 


Simplifying
-1r = 5 + -8

Combine like terms: 5 + -8 = -3
-1r = -3

Solving
-1r = -3

Solving for variable 'r'.

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

Divide each side by '-1'.
r = 3

Simplifying
r = 3

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