28. a) The pth term of an A. P. is a and the qtr term is b. Prove that the sum of its (p + q)terms is
p+q/2[a + b + (a-b)/(p-q)]

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.

4 candies

step-by-step explanation:

7 x 28 = 196

200 - 196 = 4 candies remaining.