4/9s^3t^4r^6
Если s=1, t=2, r=-1, то 4/9 * 1^3 * 2^4 * (-1)^6 = 4/9 * 1 * 16 * 1 = 4*16/9 = 64/9 = 7 1/9
4/9s^3t^4r^6
Если s=1, t=2, r=-1, то 4/9 * 1^3 * 2^4 * (-1)^6 = 4/9 * 1 * 16 * 1 = 4*16/9 = 64/9 = 7 1/9