(x+y)/(x-t+z)+(x+z)/(y-x-z)-(y+z)/(x+z-y)

Question

(x+y)/(x-t+z)+(x+z)/(y-x-z)-(y+z)/(x+z-y)

Answer 1

你题目好象错了。应该是(x+y)/(x-Y+z)+(x+z)/(y-x-z)-(y+z)/(x+z-y) （X+Y-X-Z-Y-Z）/（x-Y+z)=-2Z/x-Y+z)