(7/8)-(1/17)+(9/8)-(6/17)
问题描述:
(7/8)-(1/17)+(9/8)-(6/17)
要简便运算的,
答
(7/8)-(1/17)+(9/8)-(6/17)
=(7/8)+(9/8)-(1/17)-(6/17)
=2-(1/17)-(6/17)
=2-(7/17)
=27/17