
Find the Least Common Denominator for:
What do we need to do when dividing rational expressions?
Select ALL of the restrictions:

Multiply. Do not include the restrictions.
Divide. Do not include the restrictions.
Add. Do not include the restrictions.
Solve the equation. Be sure to check your solutions against the restricted values.
Solve the equation. Be sure to check your solutions against the restricted values.
Subtract. Do not include the restrictions.
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Huckleberry Finn can whitewash a fence in 6 hours. His friend Tom Sawyer
can whitewash a fence in 3 hours. If they work together, how long will it take
them to whitewash the fence?

Jessica and her friend are making 500 paper cranes for the town fair! Jessica can make 1 crane every 3 minutes, and her friend can make 1 crane every 2 minutes. How long will it take them to make all 500 cranes if they work together?
