Respuesta :

if w=5, then we can replace the w in the equation with 5.

7 * 5 - 4

using order of operations, we multiply 7 times 5 first

35 - 4

which ends up giving us 31.
If w=5 
   7*5= 35
      so... 35-4=31
          The value of 7w-4 is 31