If pqr = 1 , rst = 0 , and spr = 0, which of the following must be zero?
a. p
b. q
c. r
d. s
e. t

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.