Ex 1.1, 2 (b) Write a negative integer and a positive integer whose sum is –5 2 & −7
2 + (−7)
= 2 − 7
= −(−2 + 7)
= −(7 − 2)
= −5
−6 & 1
−6 + 1
= − (6 − 1)
= −5
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