Assuming n is a positive integer, the simple rules governing this situation are:* x + n means the temperature is x?? and RISES by n degrees.* x ??? n means the temperature is x?? and DROPS by n degrees.it is all about MOVEMENT ??? moving either up or down the thermometer n degrees.For example:6 ??? 7 means: temperature is first 6?? and drops 7 degrees.(-6) ??? 7 means: temperature is first -6??