r-9.9=-7.1

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Solution for r-9.9=-7.1 equation: 


Simplifying
r + -9.9 = -7.1

Reorder the terms:
-9.9 + r = -7.1

Solving
-9.9 + r = -7.1

Solving for variable 'r'.

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

Add '9.9' to each side of the equation.
-9.9 + 9.9 + r = -7.1 + 9.9

Combine like terms: -9.9 + 9.9 = 0.0
0.0 + r = -7.1 + 9.9
r = -7.1 + 9.9

Combine like terms: -7.1 + 9.9 = 2.8
r = 2.8

Simplifying
r = 2.8

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