How do you translate "7 less than twice a number and k" into a mathematical expression?
There are two different interpretations:
In the absence of any punctuation which would indicate exactly what is meant, this statement could be read as:
"7 less than, twice a number and k"
"7 less than ...." means subtract 7 from a number.
"Twice a number means "2 times a number"
"Twice a number and
Putting these phrases together gives
the statement could also be read as:
"7 less than, twice, a number and k"