the temps that we know are colder than -5deg C
first anything below or less than -5degC will be colder in temperature because it has a lower or smaller value, so it is colder overall.
3 examples would be x<-5deg C
x= -6deg C
x= -7deg C
x= -8deg C
so plugging in x value we get -6<-5 -7<-5 -8<-5
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