The high temperature one day was twice the low temperature. the high temperature was also 33 degrees more than the low temperature. what was the low temperature

The answer to your question is 33 degrees for the low temperature. We know this because if we multiply 33 by 2 ("high temperature one day was twice the low temperature") then subtract by 33 ("The high temperature was also 33 degrees more than the low temperature") you will then get the low temp. 
Hope this helps! :)