.2 Add the following integers by using number line (+5) + (+7) , (+9) + (-4), (-5) +(-8),
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Answer:
12,5,13
Sol:(+5) + (+7) ,(+9)+(-4),(-5)+(-8)
(5)+(7),(+9)-(4),(-5)-(8)
12,(9-4),(5+8)
12,5,13
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