7.5×2.3+1.9×2.5．
问题描述：
7.5×2.3+1.9×2.5．
答
7.5×2.3+1.9×2.5
=17.25+4.75
=22；
故答案为22．
7.5×2.3+1.9×2.5．
7.5×2.3+1.9×2.5
=17.25+4.75
=22；
故答案为22．