you have to work bacwards
No.1
\(c=\frac{5}{9}(F-32)\)
\(c=60\)
\(\frac{60}{\frac{5}{9}}=\frac{\frac{5}{9}}{\frac{5}{9}}(F-32)\)
\(10.8=F-32\)
\(42.8=F\)
No. 2
\(c=27.5\)
\(\frac{27.5}{\frac{5}{9}}=\frac{\frac{5}{9}}{\frac{5}{9}}(F-32)\)
\(49.5=F-32\)
\(81.5=F\)
