r+2.1=-5.1

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Solution for r+2.1=-5.1 equation: 


Simplifying
r + 2.1 = -5.1

Reorder the terms:
2.1 + r = -5.1

Solving
2.1 + r = -5.1

Solving for variable 'r'.

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

Add '-2.1' to each side of the equation.
2.1 + -2.1 + r = -5.1 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + r = -5.1 + -2.1
r = -5.1 + -2.1

Combine like terms: -5.1 + -2.1 = -7.2
r = -7.2

Simplifying
r = -7.2

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