r-5=80

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Solution for r-5=80 equation: 


Simplifying
r + -5 = 80

Reorder the terms:
-5 + r = 80

Solving
-5 + r = 80

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 = 80 + 5

Combine like terms: -5 + 5 = 0
0 + r = 80 + 5
r = 80 + 5

Combine like terms: 80 + 5 = 85
r = 85

Simplifying
r = 85

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