\(\dfrac{13}{14}.\dfrac{3}{1}=\dfrac{39}{14}\)
\(\dfrac{13}{14}.\dfrac{3}{1}=\dfrac{13.3}{14}=\dfrac{39}{14}\)
Tính giá trị các biểu thức sau:
a, 12.18 + 14.3 – 255:17
b, 13 + 42.5 – (198:11 – 8)
c, 25.8 – 12.5 + 272:17 – 8
d, 2 3 - 5 3 : 5 2 + 12 . 2 2
5.36^9.4^6 -2.12^14.3^6/5.2^28.3^19-7.2^29.3^18
a)x-17/36=15/16.27/4
b) |x-2/7|+9/14.3/4=1
c)1/5+2/11<x/55<2/5+4/55 (x thuộc Z)
3/14.3+39:3-8.[45:9-(2006-401.5)]
5.(2^2.3^2)^9.(2^2)^6-2.(2^2.3)^14.3^4/5.2^28.3^18-7.2^29.3^18
Tính M=5.(2^2.3^2)^9.(2^2)6-2.(2^2.3)^14.3^6/5.2^38.3^19-7.2^29.3^18
N=(5.(2^2.3^2)^9.(2^2)^6-2.(2^2.3)14.3^6)/5.2^28.3^19-7.2^29.3^18
tinh N=5.(2^.3^2).(2^2)^6-2.(2^2.3)^14.3^6/5.2^28.3^19-7.2^29.3^18
rút gọn biểu thức a=5.(2^2.3^2)^9.(2^2)^6-2.(2^2.3)^14.3^4/5.2^28.3^18-7.2^29.3^18
