Answer
$$-80^{o}F=210.93K = -62.22^{o}C$$
Work Step by Step
To convert $^{o}F to ^{o}C$, use the following formula:
$$^{o}C=(F^{o}-32)\div1.8$$ $$^{o}C=(-80^{o}-32)\div1.8$$ $$^{o}C=-62.22$$ To convert $^{o}C to K$, use the following formula:
$$K=^{o}C+273.15$$ $$K=^{o}-62.22+273.15$$ $$K=210.9$$
