是2/3×2(t-3)-1/2×2(t-2)=4 (1)还是2/(6t-18)-1/(4t-8)=4 (2)?解(1):t/3=6t=18解(2):当t不为2且t不为3时,两边乘以(t-2)(t-3)(t-2)/3-(t-3)/4=4(t-2)(t-3)整理:4t^2-20t+6=t/12-1/1248t^2-241t+73=0解得:t=44065^0.5/96+241/96或 241/96 - 44065^0.5/96