(2.8*5.1-0.37)/(2.7*5.1-0.37)怎么简便运算
问题描述：
(2.8*5.1-0.37)/(2.7*5.1-0.37)怎么简便运算
答
原式=(2.7*5.1-0.37+0.1*5.1)/(2.7*5.1-0.37)
=1+0.51/(2.7*5.1-0.37)
=1+0.51/13.4
=1340/1391