r-10.4=20.5

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Solution for r-10.4=20.5 equation: 


Simplifying
r + -10.4 = 20.5

Reorder the terms:
-10.4 + r = 20.5

Solving
-10.4 + r = 20.5

Solving for variable 'r'.

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

Add '10.4' to each side of the equation.
-10.4 + 10.4 + r = 20.5 + 10.4

Combine like terms: -10.4 + 10.4 = 0.0
0.0 + r = 20.5 + 10.4
r = 20.5 + 10.4

Combine like terms: 20.5 + 10.4 = 30.9
r = 30.9

Simplifying
r = 30.9

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