Practice problem
Express 1x+1y+1z\frac1x+\frac1y+\frac1zx1+y1+z1 as a single fraction.
3x+y+z\frac{3}{x+y+z}x+y+z3
x+y+zxyz\frac{x+y+z}{xyz}xyzx+y+z
xy+xz+yzxyz\frac{xy+xz+yz}{xyz}xyzxy+xz+yz
xz+yz+1xyz\frac{xz+yz+1}{xyz}xyzxz+yz+1
Type a concept, like “slope” or “photosynthesis”.
