35.48-(9.4-0.52) =35.48-9.4+0.52 =35.48+0.52-9.4 =36-9.4 =26.6 如果不嫌弃复杂还可以把9.4看成10-0.6 35.48-(9.4-0.52) =35.48-9.4+0.52 =35.48+0.52-(10-0.6) =36-10+0.6 =26.6
