Fill in the blanks:

(i) 8 + …………… = 0

(ii) (-10) + …………… = -10

(iii) (-6) + (-8) = (-8) + ……………

(iv) (-6) + …………… = -14

(v) (-11) + …………… = (-7)

(vi) (-9) + …………… = -1

Subtract the sum of -137 and -43 from the sum of -103 and 27.

The sum of two integers is 43. If one of them is -27, find the other.

Find the successor of :

30