0.75*9+(8/9)+(3/4)*1+(1/9)-75%要简便的过程输错了，是0.75*9又（8/9）+（3/4）*1又（1/_数学解答

0.75*9+(8/9)+(3/4)*1+(1/9)-75%
要简便的过程
输错了，是0.75*9又（8/9）+（3/4）*1又（1/9）-75%

人气：186 ℃　时间：2020-04-28 06:53:54

解答

0.75*9+(8/9)+(3/4)*1+(1/9)-75%
=0.75*9+(8/9)+0.75+(1/9)-0.75
=0.75*(9+1-1)+(8/9+1/9)
=0.75*9+1
=7.75