填空's2j2o1G(l.N)B/y:h;g({2i5c0M
被减数是72，减数和差的比是4∶5，减数是;s(k2T7g'T2F:g9J*E,l'Q1o0a's2j2o1G(l.N)B/y:h;g({2i5c0M