12.3r+18.81=7.2r-19.95

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Solution for 12.3r+18.81=7.2r-19.95 equation: 


Simplifying
12.3r + 18.81 = 7.2r + -19.95

Reorder the terms:
18.81 + 12.3r = 7.2r + -19.95

Reorder the terms:
18.81 + 12.3r = -19.95 + 7.2r

Solving
18.81 + 12.3r = -19.95 + 7.2r

Solving for variable 'r'.

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

Add '-7.2r' to each side of the equation.
18.81 + 12.3r + -7.2r = -19.95 + 7.2r + -7.2r

Combine like terms: 12.3r + -7.2r = 5.1r
18.81 + 5.1r = -19.95 + 7.2r + -7.2r

Combine like terms: 7.2r + -7.2r = 0.0
18.81 + 5.1r = -19.95 + 0.0
18.81 + 5.1r = -19.95

Add '-18.81' to each side of the equation.
18.81 + -18.81 + 5.1r = -19.95 + -18.81

Combine like terms: 18.81 + -18.81 = 0.00
0.00 + 5.1r = -19.95 + -18.81
5.1r = -19.95 + -18.81

Combine like terms: -19.95 + -18.81 = -38.76
5.1r = -38.76

Divide each side by '5.1'.
r = -7.6

Simplifying
r = -7.6

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