10-2分之1-4分之1-8分之1-16分之1-32分之1
=10-1/2-1/4-1/8-1/16-1/32
=10-(1-1/2)-(1/2-1/4)-(1/4-1/8)-(1/8-1/16)-(1/16-1/32)
=10-1+1/2-1/2+1/4-1/4+1/8-1/8+1/16-1/16+1/32
=9+1/32
=9又1/32