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Answer:
4. <
5. <
6. <
7.
30+(-5)+3+(-10) = N
30 - 5 + 3 - 10 = N
25 - 7 = N
18 = N
N = 18
8.
16+20+95+(-55) = N
16+20+95-55 = N
36+40 = N
76 = N
N = 76
9-10.
99-15
99 - 15 = 84°F