(1-16.25除以5/8)分之(15又1/4*1又3/5+1.6)
=(1- 16.25×8/5)分之(61/4* 8/5+ 1.6)
=(1- 130/5)分之(122/5 + 1.6)
=(1- 26)分之(24.4+1.6)
=-25分之26
=-1又25分之1
(1-16.25除以5/8)分之(15又1/4*1又3/5+1.6)
=(1- 16.25×8/5)分之(61/4* 8/5+ 1.6)
=(1- 130/5)分之(122/5 + 1.6)
=(1- 26)分之(24.4+1.6)
=-25分之26
=-1又25分之1