0.7乘以11分之3减去6.6乘以7分之3减去1.1乘以7分之3加上0.7乘以11分之8等于?_数学解答

0.7乘以11分之3减去6.6乘以7分之3减去1.1乘以7分之3加上0.7乘以11分之8等于?

人气：463 ℃　时间：2019-08-19 19:22:26

解答

0.7*3/11 - 6.6*3/7 -1.1* 3/7+0.7*8/11
=0.7*（3/11+8/11）-3/7 *（6.6+1.1）
=0.7-3.3
=-2.6