Two sets are said to be disjoint if their intersection is zero.

step-by-step explanation:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)