0.8✖️（3.2➖2.99➗3.3）请用简便算法.急用,

0.8✖️（3.2➖2.99➗3.3）请用简便算法.急用,
0.8✖️（3.2➖2.99➗3.3）请用简便算法.急用,

0.8✖️（3.2➖2.99➗3.3）请用简便算法.急用,
原式=0.8*(1056/330-299/330)
=4/5*(757/330)
=3028/1650
=1514/825