While three watchmen were guarding an orchard, a thief slipped in and stole some apples. On his way out, he met the three watchmen one after another, and to each in turn he gave half the apples he had and two besides. In this way he managed to escape with one apple. How many apples had he stolen originally?

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !

step-by-step explanation:

i'm not sure how to show the work for this

answer : c and d or 4(29 + 6)

4(29) + 4(6)