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Step-by-step explanation:
1. -69×103 =-69×100+-69×3
= -6900+ -207
= -7107
2. 65÷-13+(-72) ÷(-8)
=(-5) + 9
=4.
3.product of two integers is =-437
one integer =23
second integer = -19
4.temperature at noon =16 degrees
decrease of temperature every hour =3 degrees
drop of temperature after 5 hours =15 degrees
temperature at 5p.m=16-15=1 degrees Celsius.