(1+1/16+1/17+1/18)x(1/16+1/17+1/18+1/19)-(1+1/16+1/17+1/18+1/19)x(1/16+1/17+1/18)怎么算
问题描述:
(1+1/16+1/17+1/18)x(1/16+1/17+1/18+1/19)-(1+1/16+1/17+1/18+1/19)x(1/16+1/17+1/18)怎么算
答
(1+1/16+1/17+1/18)x(1/16+1/17+1/18+1/19)-(1+1/16+1/17+1/18+1/19)x(1/16+1/17+1/18)怎么算