r-0.2r=-6.4

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Solution for r-0.2r=-6.4 equation: 


Simplifying
r + -0.2r = -6.4

Combine like terms: r + -0.2r = 0.8r
0.8r = -6.4

Solving
0.8r = -6.4

Solving for variable 'r'.

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

Divide each side by '0.8'.
r = -8

Simplifying
r = -8

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