下面各题能简便的要简便．
15﹣8.13﹣1.87             5.14+3.225﹣6.302         3.95+5.36﹣1.95
13.67﹣（5.45+3.67）       4.26+5.48﹣1.26+4.52      14.67+25.91+15.33+4.09．