Answer
The equivalent Fahrenheit temperatures are 14$^{\circ}$F and 122$^{\circ}$F
Work Step by Step
T ($^{\circ}$F) = $\frac{9}{5}$ * T($^{\circ}$C) + 32
T ($^{\circ}$F) at -10$^{\circ}$C
T ($^{\circ}$F) = $\frac{9}{5}$ * -10 + 32
T ($^{\circ}$F) = -18 + 32
T ($^{\circ}$F) = 14
T ($^{\circ}$F) at 50$^{\circ}$C
T ($^{\circ}$F) = $\frac{9}{5}$ * 50 + 32
T ($^{\circ}$F) = 90 + 32
T ($^{\circ}$F) = 122
So the equivalent Fahrenheit temperatures are 14$^{\circ}$F and 122$^{\circ}$F
