Temperature Converters
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#### Fahrenheit to Celsius
Write a function that converts fahrenheit temperatures to celsius. The equation to do this is ```C = (F - 32) * 5/9```.

#### Celsius to Fahrenheit

Write a similar function that converts celsius to fahrenheit.  
The equation for this is ```F = (C * 9/5) + 32```.

#### Testing

Make sure the tests pass. Write 3 of your own tests.