5.2乘以8分之3+4.625乘以5又5分之1

问题描述:

5.2乘以8分之3+4.625乘以5又5分之1

5.2*(3/8)+4.625*(5又1/5)
=11/2*3/8+33/8*26/5
=33/16+858/40
=(1320+13728)/640
=15048/ 640
=23又328/640最后算出来是15048?23又41/80