r-8.6=-8.1

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Solution for r-8.6=-8.1 equation: 


Simplifying
r + -8.6 = -8.1

Reorder the terms:
-8.6 + r = -8.1

Solving
-8.6 + r = -8.1

Solving for variable 'r'.

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

Add '8.6' to each side of the equation.
-8.6 + 8.6 + r = -8.1 + 8.6

Combine like terms: -8.6 + 8.6 = 0.0
0.0 + r = -8.1 + 8.6
r = -8.1 + 8.6

Combine like terms: -8.1 + 8.6 = 0.5
r = 0.5

Simplifying
r = 0.5

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