19.45=-8.6r+-12.8

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Solution for 19.45=-8.6r+-12.8 equation: 


Simplifying
19.45 = -8.6r + -12.8

Reorder the terms:
19.45 = -12.8 + -8.6r

Solving
19.45 = -12.8 + -8.6r

Solving for variable 'r'.

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

Add '8.6r' to each side of the equation.
19.45 + 8.6r = -12.8 + -8.6r + 8.6r

Combine like terms: -8.6r + 8.6r = 0.0
19.45 + 8.6r = -12.8 + 0.0
19.45 + 8.6r = -12.8

Add '-19.45' to each side of the equation.
19.45 + -19.45 + 8.6r = -12.8 + -19.45

Combine like terms: 19.45 + -19.45 = 0.00
0.00 + 8.6r = -12.8 + -19.45
8.6r = -12.8 + -19.45

Combine like terms: -12.8 + -19.45 = -32.25
8.6r = -32.25

Divide each side by '8.6'.
r = -3.75

Simplifying
r = -3.75

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