Question 1: Add

Answer:

LCM of and |
LCM of and |

LCM of |

Question 2: Subtract

Answer:

LCM of and

LCM of and

LCM of and

Question 3: Evaluate

Answer:

LCM of and

LCM of and

LCM of and

Question 4: Evaluate:

Answer:

Question 5: Evaluate

Answer:

Question 6: Simplify:

Answer: