`7/11-x=3/11`
`=>x=7/11-3/11
`=>x=4/11`
7/11 - x = 3/11
x = 7/11 - 3/11
x = 4/11
3 x ( 1/7 + 1/3 - 3/14 ) : 11/14
( 8/5 + 11/5 ) x 11/10 + ( 17/10 - 4/5) : 3/7
3/11 x 7/19 + 3/11 x 17/19 - 3/11 x 24/19
Tính nhanh:
6/11 x 3/7 x 3/7 x 5/11
Cần gấp
3/7 x 11/5 + 4/7 x 11/5
tính bằng cách nhanh nhất:
1.4 x26 x5.6
\(\dfrac{6}{11}\) x \(\dfrac{3}{7}\) + \(\dfrac{3}{7}\) x \(\dfrac{5}{11}\)
4 tìm x :
a) x - 5/7 - 13/14 = 1
b) 3/5 + x + 11/5 = 11/3
bài 1 : Tính nhanh
A) ( 6 x 5 + 7 - 37 ) x ( 1+ 2 +3 +4 +5 + 6 +7 +8 +9 +10 )
B ) ( 43* 11 + 44 * 11 + 45 *11 + 46 *11+ 47 *11 ) : ( 45 * 55 )
rút gon p/s sau:
a) 35 / 14 và 125 / 50
b) 4 x 5 + 4 x 11 / 8 x 7 + 4 x 3
c) 3 x 11 + 7 x 11 / 22 x2 + 11 x 6
d) 1997 x 1996 - 1 / 1995 x 1997 + 1996
m.n giup ,k vs samg mai mk di hoc rk
Tính giá trị biểu thức:
(\(\dfrac{6}{11}+\dfrac{5}{11}\)) x \(\dfrac{3}{7}\) \(\dfrac{3}{5}x\dfrac{7}{9}-\dfrac{3}{5}x\dfrac{2}{9}\) \(\left(\dfrac{6}{7}-\dfrac{4}{7}\right):\dfrac{2}{5}\)
Tìm x
a) 1/2 : 3 + x = 14/5
b) 8/5 : x : 7/4 = 11/6
c) 24/10 + x : 3/4 = 11/3
