命题1.2x2.4+9.6÷0.32=1.2*2.4+30=2.88+30=32.88 即为所求
四则混合运算，先算乘除，后算加减。1.2×2.4+9.6÷0.32=2.88+30=32.88
1.2×2.4+0.96/0.32=1.2×2.4+3=3×(1.2×0.8+1)=5.88
