During his first round the world voyage, the English navigator James Cook visited first x islands in the Pacific

During his first round the world voyage, the English navigator James Cook visited first x islands in the Pacific Ocean, and then also near the islands. how many islands did Cook visit on this voyage?

Since the number of islands cannot be a fractional or negative number, let’s turn to the rule for adding positive integers:

the sum of two positive integers that determine the number of items stacked gives the total number of these items.

The total number of islands is determined by the expression: x + y

Answer: x + y islands.