C# HELP Can anyone Explain it please ???

Question

i didn't know how is this possible please somebody can explain how is this answer???
question in screenshot: https://ibb.co/k9Ax05

Answer 1

x=f.x; //x=6 // useless line. This is not going to be used in example

f.y=y;//f.y=9; //f.y is changed to 9
z = f.z;//z= 3 //z is change to 3

f.x+f.y*z;//8+9*3 = 8 + 27 = 35
first multiple 9*3
second add 8
(because of order of mathematical operation)
That makes the answer 35.

(LOL I tried to press "end now", it did not work)