[230000*0.42075%*(1+0.0.42075%)^120]/[(1+0.42075%)^120-1]=?
R 192.168.0.0/24[120/1] via 192.168.2.1,00:00:13,serial0/0
1/120+1/210+1/336+1/504=?
120*(1-80%)
120*18%/36%*(1/3)=过程
X-9分之1X=120
(120×120)-(119×121)=1 (120×120)-(118×122)=4 问:(120×120)-(__×
120+0.6×120x=0.6×120(x+1)解方程
计算 (80+120)*(1+16%)=80*(1-5%)+120*(1+x)
(1/8+1/24+1/48+1/80+1/120+1/168+1/224)*64=?
(1/8+1/24+1/48+1/80+1/120+1/168+1/224)*64=
x-120+200=(1+1/5)x
X-1/3x=120/(1/4) 解方程