貌似是2题 (-4分之3)×（-8+3分之2-3分之1） =3/4×8-3/4×2/3+1/3×3/4 =6-1/2+1/4 =6-1/4 =23/4 -2分之3×[(-3分之2）^2-2] =-3/2×4/9+2×3/2 =-2/3+3 =7/3
