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A. add the following intergers

1. 7+8
2.5+(-2)
3.(-4) + (-5)
4.(-9) + 3
5.(-1)+1

B. find the difference of the following

1.6-4
2.3 - (-5)
3.(-9) - 2
4. (-2) - (-6)
5. 7 - (-7)

need ko po help papasaham nananamin bukas bhi ​