\(\dfrac{4}{9}-\dfrac{3}{14}\div\dfrac{4}{7}=\dfrac{4}{9}-\dfrac{3\times7}{7\times2\times4}=\dfrac{4}{9}-\dfrac{3}{8}=\dfrac{32-27}{72}=\dfrac{5}{72}\)
9/5 : 7/4 + 3/4x8/7 7 x 3/14 - 1/14
1/2+2/3+3/4+4/5+5/6+6/7+7/8+8/9+9/10+10/11+11/12+12/13+13/14+14/15=?
4/9 - 3/14 : 4/7
4/ 5 x 15/11 x 2/9
4/7 x 2/5 + 4/7 x 3/5
(5/7 + 7/8) x 2
2/14 + 3/7 - 3/14 x 2
9/14-3/7=; 6/8*4/5=; 6/4:7/5=;
Tính bằng cách thuận tiện nhất
A. 2/5*4/7+3/5*4/7
B. 17/13*12/17-4/13*12/17
C. 9/14 : 6/7+5/14 : 6/7
D. 9/12 : 7/9*12/19
{ < , >, = }
5/6......11/12 4/7.......3/4 5/8..........3/8
10/14.....5/7 10/9 .......10/11 8/15...........8/9
16/7:4..... 9/14 nhân 4/3, 27/12+5/6..... 7/3:4/5, đề bài là điền ><=
Tính 4/9 - 3/14 : 4/7
Tính :
a) 7 x \(\dfrac{3}{14}\) - \(\dfrac{1}{14}\) b) \(\dfrac{3}{2}\) + \(\dfrac{7}{4}\) x \(\dfrac{2}{5}\)
c) \(\dfrac{9}{8}\) : 3 + \(\dfrac{7}{8}\) : 3 d) 2 : \(\dfrac{3}{4}\) - \(\dfrac{5}{8}\) x \(\dfrac{4}{3}\)
