1.

The temperature of city A is\[\text{-34  }\!\!{}^\circ\!\!\text{ C}\]. It falls by\[\text{18 }\!\!{}^\circ\!\!\text{ C}\]. What is the temperature after the fail?

A. \[\text{-34 }\!\!{}^\circ\!\!\text{ C + 18  }\!\!{}^\circ\!\!\text{ C}\]
B. \[\text{-34  }\!\!{}^\circ\!\!\text{ C - 18  }\!\!{}^\circ\!\!\text{ C}\]  
C. \[18{}^\circ \text{C}-34{}^\circ \text{C}\]            
D. \[\text{34 }\!\!{}^\circ\!\!\text{ C-18 }\!\!{}^\circ\!\!\text{ C}\]
Answer» C. \[18{}^\circ \text{C}-34{}^\circ \text{C}\]            


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