Which of the following shows the union of the sets? {1, 4, 8, 12} {2, 4, 6, 8}

{1,2,4,6,8,12}

Step-by-step explanation:

The union means the joining of the sets

{1, 4, 8, 12} U{2, 4, 6, 8}

= {1,2,4,6,8,12}

{1, 2, 4, 6, 8, 12}

Step-by-step explanation:

Union of the sets is the combination of the elements in the two sets.

{1, 4, 8, 12}  ∪  {2, 4, 6, 8}

{1, 2, 4, 6, 8, 12}

-2

7 - 9 = -2

reversed:

-2 + 9 = 7