What are the advantages of using the least common denominator? A. The result of the addition or subtraction will never be in simplest form. B. It is possible the the result of the addition or subtraction will be in simplest form. C. The result of the addition or subtraction will always be in simplest form.

15. \( \frac{1}{15}+\frac{6}{5} \div \frac{12}{7} \)

18. Isaac bought three packages of nuts He bought one package of peanuts the weighed 3.07 pounds. He also bought two packages of pecans that weighed 1.46 pounds and 1.5 pounds. Did the peanuts or the pecans weigh more? Hours much more?

2. Pasar de decimal a racional (Fracción Generatriz) a) 3,235

b) \( 1 \div \frac{2}{9} \)

E 4 Litun : DIG DEEPER! You can complete one-half of a job in an hour. Your friend can complete one-third of the same job in an hour. How long will it take to complete the job if you work together? Write your answer as a decimal. The job will take hour(s).