5/7+(1/4-9/14) 13/25+1/5—7/15 12/17+(1/4+1/2)5/7+(1/4-9/14)13/25+1/5—7/1512/17+(1/4+1/2)
问题描述:
5/7+(1/4-9/14) 13/25+1/5—7/15 12/17+(1/4+1/2)
5/7+(1/4-9/14)
13/25+1/5—7/15
12/17+(1/4+1/2)
答