递等式计算13.27-0.27*3.4+6.6_数学解答

递等式计算13.27-0.27*3.4+6.6

人气：326 ℃　时间：2020-09-30 06:09:56

解答

13+0.27-0.27*3.4+6.6
=13+0.27*(1-3.4)+6.6
=13+0.27*6.6+6.6
=13+(0.27+1)*6.6
=13+1.27*6.6
=21.382