40=0.5r*

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Solution for 40=0.5r* equation: 



40=0.5r*

We move all terms to the left:

40-(0.5r*)=0

We add all the numbers together, and all the variables

-(+0.5r*)+40=0

We get rid of parentheses

-0.5r*+40=0

We move all terms containing r to the left, all other terms to the right

-0.5r*=-40

r=-40/1

r=-40

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