In each of the following, write the Roman numerals in Hindu-Arabic notation and then add them. Write the answer in Roman numerals.

Here are the solutions to the Roman numeral problems:

6. In each of the following, write the Roman numerals in Hindu-Arabic notation and then add them. Write the answer in Roman numerals.

• a) XIX + XXX

  $$19 + 30 = 49$$

  The answer in Roman numerals is $\boxed{\text{XLIX}}$.

• b) 50 - 1

  $$50 - 1 = 49$$

  The answer in Roman numerals is $\boxed{\text{XLIX}}$.

• c) 27 + 3

  $$27 + 3 = 30$$

  The answer in Roman numerals is $\boxed{\text{XXX}}$.