r-8.7=-8.2

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Solution for r-8.7=-8.2 equation: 


Simplifying
r + -8.7 = -8.2

Reorder the terms:
-8.7 + r = -8.2

Solving
-8.7 + r = -8.2

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 = -8.2 + 8.7

Combine like terms: -8.7 + 8.7 = 0.0
0.0 + r = -8.2 + 8.7
r = -8.2 + 8.7

Combine like terms: -8.2 + 8.7 = 0.5
r = 0.5

Simplifying
r = 0.5

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