The value of the given expression (w - 4x) is 1.
Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication and division.
The expression can be solved as:-
E = w - 4x
Put w = 9 and x = 2 in the expression above.
E = 9 - ( 4 x 2 )
E = 9 - 8
w = 1
Hence, the value of the given expression is 1.
To know more about expression follow
https://brainly.com/question/723406
#SPJ2