r+6.6=-8.7

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Solution for r+6.6=-8.7 equation: 


Simplifying
r + 6.6 = -8.7

Reorder the terms:
6.6 + r = -8.7

Solving
6.6 + r = -8.7

Solving for variable 'r'.

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

Add '-6.6' to each side of the equation.
6.6 + -6.6 + r = -8.7 + -6.6

Combine like terms: 6.6 + -6.6 = 0.0
0.0 + r = -8.7 + -6.6
r = -8.7 + -6.6

Combine like terms: -8.7 + -6.6 = -15.3
r = -15.3

Simplifying
r = -15.3

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