自然数a、b满足 1/a-1/b=1/182,a:b=7:13 则a+b=_.
问题描述:
自然数a、b满足
-1 a
=1 b
,a:b=7:13 则a+b=______. 1 182
答
a:b=7:13, a=7b13, 1a=137b;把1a=137b代人1a−1b=1182,得,137b−1b=1182, 67b=1182, 7b=182×6,&...