Question

(b) Fill in the blank-
(i) (-9) +7...) = (5) + (...)
(ii)
+ 25 = 0
(iii) 12- (...) = 24
iv) (...) + (-15 ) = ( ...) + (-3)
(v) (-54) - (-21) = - (...)
(vi) (-255) + ... = 255
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Answer 1

Answer:

$(1) - 9 + 7 = 5 + ( - 7) \\ (2) - 25 + 25 = 0 \\ (3)12 - ( - 12) = 24 \\ (4)24 = 12+ ( - 3) \\ (5) - 54 - ( - 21) = - 33 \\ (6)( - 225) + 450 = 225$