The record high January temperature in Austin, texas, is 90°f. The record low January temperature is -2°f. Find the differences
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For 
, 
, all the more 
, therefore no solution.
For
, we have 
. Obviously that' false.
For
both 
and 
, where 
, belong to the range 
, then 
belong to the range 
.
Those ranges don't have a common part, therefore, again, no solution.
So, the equation
doesn't have a solution.
For
For
Those ranges don't have a common part, therefore, again, no solution.
So, the equation
