# 5. Find the sum :   (a)     (b)

It is known that the sum of
Therefore,
(a)
= - (9 + 7) + 4 + 16
=  (- 16) + 4 + 16
= 4

Also we can split the 16 into (- 9 and -7 ).

(b)
= 37 + (- 37) + (- 28) + (-2) + (- 8)
= 0 - (37 + 28 + 8)
= - 73

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