# math help

posted by
**Tomas**
.

5x+10y +15z-15x+10y-5z+5x-10y-5z / (5x+10y+15z)-(15x+10y-5z)+(5x-10y-5z)

a. 1/3

b. 1

c. x+2y+z / x-2y+3z

d. x-2y-z / x+2y-3z

e. x-2y-z / x+2y+z

my answer is none of above,

is - 1/3,

I didn't know I done it wrong or the question is not correct