2.2r-3=31.2

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Solution for 2.2r-3=31.2 equation: 


Simplifying
2.2r + -3 = 31.2

Reorder the terms:
-3 + 2.2r = 31.2

Solving
-3 + 2.2r = 31.2

Solving for variable 'r'.

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

Add '3' to each side of the equation.
-3 + 3 + 2.2r = 31.2 + 3

Combine like terms: -3 + 3 = 0
0 + 2.2r = 31.2 + 3
2.2r = 31.2 + 3

Combine like terms: 31.2 + 3 = 34.2
2.2r = 34.2

Divide each side by '2.2'.
r = 15.54545455

Simplifying
r = 15.54545455

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