14.4(2.6/1.2)=31.24O(2.6/1.2)=260/3题不是很清楚,所以写2个!
解:14.40×(2.6÷1.2)=72/5×13/6=156÷5=31.2
14.40×(2.6÷1.2) =72/5×13/6 =156÷5 =31.2