Question 851718
2a + 5d=47,
116 = ½(2a + d(7))8

a = 46,   d = -9
first two terms 46 and 37

2a + 5d=47,
116 = 4(2a + 7d)
116=8a+28d
2a + 5d=47

S = ½(92 -63)8
S=4*(29)
46,37,28,19, 10, 1, -8, 17
add to 116