r-4=-31.2

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Solution for r-4=-31.2 equation: 


Simplifying
r + -4 = -31.2

Reorder the terms:
-4 + r = -31.2

Solving
-4 + r = -31.2

Solving for variable 'r'.

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

Add '4' to each side of the equation.
-4 + 4 + r = -31.2 + 4

Combine like terms: -4 + 4 = 0
0 + r = -31.2 + 4
r = -31.2 + 4

Combine like terms: -31.2 + 4 = -27.2
r = -27.2

Simplifying
r = -27.2

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