\(x-\frac57-\frac{13}{14}=1\\x-\frac57=1+\frac{13}{14}\\x-\frac57=\frac{27}{14}\\x=\frac{27}{14}+\frac57\\x=\frac{37}{14}\)
\(x-\frac57-\frac{13}{14}=1\\x-\frac57=1+\frac{13}{14}\\x-\frac57=\frac{27}{14}\\x=\frac{27}{14}+\frac57\\x=\frac{37}{14}\)
tính nhanh : 3/5 x 7/9 + 11/9 x 3/5 - 3/10
14/13 : 1/2 + 3/13 x 2 - 2 x 7/13
tinh bang cach thuan tien 3/5 x 7/9 + 11/9 x 3/5 - 3/10. B 14/13 : 1/2 + 3/13 x2 -2 x 7/13
x-5/7-13/14=1
Tìm x, biết: x + 2/7=1/2
A.x= 3/14 B. x=2/14 C. x=13/3 D. x=1/5.
x-5/7-13/14=1
4 tìm x :
a) x - 5/7 - 13/14 = 1
b) 3/5 + x + 11/5 = 11/3
x : 9/5 = 1/2
8/3 :x = 1/2
9/14 - 2/5 : 4/5
15/13 * 12/19 + 15/13 * 7/9
47/30 : 5/7 - 17/30 * 5/7
1) Tính nhanh
a) 3/8 + 7/12 + 10/16 + 10/24
b) 5/7 x 9/16 + 7/10 x 5/7
c) 4/6 + 7/13 + 17/9 + 19/13 + 1/9 + 14/6
d) 2005 x 2006 - 1/2004 x 2006 + 2005
3/7 + 4/5 + 4/7
3/2 x 4/5 x 2/3
4/6 + 7/13 + 17/9 + 19/13 + 1/9 + 14/6
315/316 x 316 /314 x 316/315 x 317/313