https://tex.z-dn.net/?f=%5Cleft+%5C%7B+%7B%7Bz%2Bt%3D%5Cfrac%7B5%7D%7B24%7D%7D+%5C%5C+%7Bx%2Bz%2Bt%3D%5Cfrac%7B1%7D%7B3%7D%7D+%5C%5C+%7Bx%2By%3D%5Cfrac%7B1%7D%7B6%7D%7D%7D+%5Cright