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?

问题描述:

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?

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