r-8=1

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Solution for r-8=1 equation: 


Simplifying
r + -8 = 1

Reorder the terms:
-8 + r = 1

Solving
-8 + r = 1

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 = 1 + 8

Combine like terms: -8 + 8 = 0
0 + r = 1 + 8
r = 1 + 8

Combine like terms: 1 + 8 = 9
r = 9

Simplifying
r = 9

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