(8.4-10.5*0.8)/5.75 5.4*2.08+66*0.208-2.08 10.1*9.2-0.92 怎样简便就怎样算

问题描述:

(8.4-10.5*0.8)/5.75 5.4*2.08+66*0.208-2.08 10.1*9.2-0.92 怎样简便就怎样算

(1)原式=4(2.1-10.5*0.2)/5.75
=0
(2)原式=2.08(5.4 6.6-1)
=2.08*10
=20.8
原式=10.1*9.2-0.1*9.2
=(10.1-0.1)*9.2
=10*9.2
= 92第二能详细点吗?好像答错了