Question

Best Answer If you explain with answer!

Which of the following is not equivalent to x - y + z?
x + z - y
z + x - y
y - x + z
z - y + x

Answer 1

take
x=7
y=3
z=1
and check !
x - y + z=7-3+1=5

x + z - y =7+1-3=5
z + x - y=1+7-3=5
y - x + z=3-7+1=-3
z - y + x=1-3+7=5

Answer 2

Thank you!