16.64=-0.4r

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Solution for 16.64=-0.4r equation: 


Simplifying
16.64 = -0.4r

Solving
16.64 = -0.4r

Solving for variable 'r'.

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

Add '0.4r' to each side of the equation.
16.64 + 0.4r = -0.4r + 0.4r

Combine like terms: -0.4r + 0.4r = 0.0
16.64 + 0.4r = 0.0

Add '-16.64' to each side of the equation.
16.64 + -16.64 + 0.4r = 0.0 + -16.64

Combine like terms: 16.64 + -16.64 = 0.00
0.00 + 0.4r = 0.0 + -16.64
0.4r = 0.0 + -16.64

Combine like terms: 0.0 + -16.64 = -16.64
0.4r = -16.64

Divide each side by '0.4'.
r = -41.6

Simplifying
r = -41.6

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