Please help! I will mark as brainliest IF answer is right. <3

Based on the figures as marked, /\rqs = —

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

Could somebody me with this radical simplification?