Respuesta :

Answer:

w = 25

Step-by-step explanation:

  • 45+30 = 100 - w
  • 75 = 100 - w
  • w = 100 - 75
  • w = 25
Justaro
In order to work out “w”, you could begin by working backwards, starting with 100, then doing the inverse operation (subtracting 30 then subtracting 45).

100 - 30 = 70 - 45 = 25.

100 - 25 = 45 + 30

w = 25