初一奥数 计算题5/2+9/4+17/8+33/16+65/32+169/64=请写出解题过程!谢谢

5/2+9/4+17/8+33/16+65/32+169/64
=2+1/2+2+1/4+2+1/8+2+1/16+2+1/32+2+1/64
=2*6+1/2+1/4+1/8+1/16+1/32+1/64
=12+1-1/64
=13-1/64