5.8-8.1=r

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Solution for 5.8-8.1=r equation:


Simplifying
5.8 + -8.1 = r

Combine like terms: 5.8 + -8.1 = -2.3
-2.3 = r

Solving
-2.3 = r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-2.3 + -1r = r + -1r

Combine like terms: r + -1r = 0
-2.3 + -1r = 0

Add '2.3' to each side of the equation.
-2.3 + 2.3 + -1r = 0 + 2.3

Combine like terms: -2.3 + 2.3 = 0.0
0.0 + -1r = 0 + 2.3
-1r = 0 + 2.3

Combine like terms: 0 + 2.3 = 2.3
-1r = 2.3

Divide each side by '-1'.
r = -2.3

Simplifying
r = -2.3

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