11.9r-18.85-13r=-0.04+19.8r

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Solution for 11.9r-18.85-13r=-0.04+19.8r equation: 


Simplifying
11.9r + -18.85 + -13r = -0.04 + 19.8r

Reorder the terms:
-18.85 + 11.9r + -13r = -0.04 + 19.8r

Combine like terms: 11.9r + -13r = -1.1r
-18.85 + -1.1r = -0.04 + 19.8r

Solving
-18.85 + -1.1r = -0.04 + 19.8r

Solving for variable 'r'.

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

Add '-19.8r' to each side of the equation.
-18.85 + -1.1r + -19.8r = -0.04 + 19.8r + -19.8r

Combine like terms: -1.1r + -19.8r = -20.9r
-18.85 + -20.9r = -0.04 + 19.8r + -19.8r

Combine like terms: 19.8r + -19.8r = 0.0
-18.85 + -20.9r = -0.04 + 0.0
-18.85 + -20.9r = -0.04

Add '18.85' to each side of the equation.
-18.85 + 18.85 + -20.9r = -0.04 + 18.85

Combine like terms: -18.85 + 18.85 = 0.00
0.00 + -20.9r = -0.04 + 18.85
-20.9r = -0.04 + 18.85

Combine like terms: -0.04 + 18.85 = 18.81
-20.9r = 18.81

Divide each side by '-20.9'.
r = -0.9

Simplifying
r = -0.9

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