.4r=1.2

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Solution for .4r=1.2 equation: 


Simplifying
0.4r = 1.2

Solving
0.4r = 1.2

Solving for variable 'r'.

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

Divide each side by '0.4'.
r = 3

Simplifying
r = 3

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