x2x6=3x1
a)2/9:2/3x1/2. b)2+1/4x4/3
c)3x1/2x1/4
a) 2/9 : 2/3 x 1/2
= 2/9 x 3/2 x 1/2
= 6/18 x 1/2
= 6/36
b) 2 + 1/4 x 4/3
= 2 + 4/7
= 2/1(7) + 4/7
= 14/7 + 4/7
= 18/7
c) 3 x 1/2 x 1/4
= 3/1 x 1/2 x 1/4
= 3/2 x 1/4
= 3/8
#Hok_tốt
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540:3x1=?
3x1=?
9x3^3x1/81x3^2
\(9\cdot3^3\cdot\dfrac{1}{81}\cdot3^2=\dfrac{3^7}{3^4}=27\)
46/3x1=..........
3x1 bằng mấy
3x1+1+1
3x1+1+1=5
k cho mình nữa đi!mình nhanh nhất mà!
1/2+4/3x1/6
\(\dfrac{1}{2}+\dfrac{4}{3}\times\dfrac{1}{6}=\dfrac{1}{2}+\dfrac{4}{18}=\dfrac{9}{18}+\dfrac{4}{18}=\dfrac{13}{18}\)
7/3x1/2+1/7
\(\dfrac{7}{3}\times\dfrac{1}{2}+\dfrac{1}{7}=\dfrac{7}{6}+\dfrac{1}{7}=\dfrac{49}{42}+\dfrac{6}{42}=\dfrac{55}{42}\)
5/3-1/3x1/4
`5/3 - 1/3 xx 1/4 = 5/3 - 1/12 = 20/12 - 1/12 = 19/12`