1-0.2，乘以大括号-3减4，乘以括号3.5-5.3，括号大括号。解：1-0.2×[-3-4×(3.5-5.3)]=1-0.2×(-3+4×1.8)=1-0.2×(-3+7.2)=1-0.2×4.2=1-0.84=0.16
