Respuesta :

Okay, so what they have given you is the values of X and y. So now we have to put the numbers into the given equation.
X is 20 and y is 18.
20+8-18
First, 20+8=28
28-18=10.
So the answer is 10.

Have a nice day
x+8-y
20+8-17=
28-17=
11