r-8.7=-8.5

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Solution for r-8.7=-8.5 equation: 


Simplifying
r + -8.7 = -8.5

Reorder the terms:
-8.7 + r = -8.5

Solving
-8.7 + r = -8.5

Solving for variable 'r'.

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

Add '8.7' to each side of the equation.
-8.7 + 8.7 + r = -8.5 + 8.7

Combine like terms: -8.7 + 8.7 = 0.0
0.0 + r = -8.5 + 8.7
r = -8.5 + 8.7

Combine like terms: -8.5 + 8.7 = 0.2
r = 0.2

Simplifying
r = 0.2

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