Determine the following sum:

a + h = _____

b + i = _____

c + j = _____

d + f = _____

e + g = _____

(a + h) + (b + i) + (c + j) + (d + f) + (e + g) = _____

(a + b + c + d + e) + (f + g + h + i + j) = _____

a + b + c + d + e = _____

f + g + h + i + j = _____​