1. Write down a pair of integers whose:
(a) sum is 7
(b) difference is -10
(c) sum is 0
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Explanation:
(a) sum is -7
Solution:-
= – 4 + (-3)
= – 4 – 3 … [∵ (+ × – = -)]
= – 7
(b) difference is – 10
Solution:-
= -25 – (-15)
= – 25 + 15 … [∵ (- × – = +)]
= -10
(c) sum is 0
Solution:-
= 4 + (-4)
= 4 – 4
= 0
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