\(\frac{2}{x}=\frac{1}{3}\Leftrightarrow2.3=x.1\Rightarrow\frac{2.3}{1}=2.3=6\)
Vậy x = 6
\(\frac{2}{x}=\frac{1}{3}\Leftrightarrow2.3=x.1\Rightarrow\frac{2.3}{1}=2.3=6\)
Vậy x = 6
A
x. 3 phan 4 - 1 = 2 phan 75
B 3 - x : 2 phan 3 = 75
tinh
2 - 5 phan 6
7 phan 8 + 3 phan 4
2 phan 5 + 3 phan 4
7 phan 12 - 2 phan 7 + 1 phan 12
12 phan 17 - 5 phan 17 - 4 phan 17
hay chia 210met vai thanh 3 phan sao cho phan1 bang 1/2 phan 2,phan 3 bang 2 lan phan 2.
a) viet phan so 7/8 duoi dang 3 phan so co cung tu
b) tinh ( 1-1/2)x(1-1/3)x(1-1/4)x(1-1/5)
quy dong cac phan so sau a, 1 phan 3 va 5 phan 6 b,7 phan 9 va 1 phan 6 c, 12 phan 15 va 2 phan 5
y tru 2 va 2 phan 3 = 1 va 2 phan 5 chia 2 va 1 phan 3
hay chia 210 m vai thanh 3 phan sao cho phan thu nhat bang 1/2 phan thu 2 ,phan thu 3bang 2 lan phan thu 2
quy dong
1 phan 2, 2 phan 3 va 3 phan 5
viet cac so do duoi dang so thap phan
a. 1 phan 4 gio
2 phan 3 phut
2 phan 5 gio
b. 3 phan 4 kg
7 phan 10 m
3 phan 5 km