37.65-17.65+5.4=(37.65-17.65)+5.4=20+5.4=25.4。
37.65-17.65=2020+5.4=25.4
请采纳
37.65-17.65=20,20+5=25,25+0.4=25.4
37.65-17.65+5.4=(37.65-17.65)+5.4=20+5.4=25.4