5.58-3/5+5.42-2/5=5.58+5.42-(2/5+3/5)=11-1=10谢谢，请采纳
用简便方法计算5.58-3/5+5.42-2/55.58-3/5+5.42-2/5=5.58+5.42-2/5-3/5=11-1=10
