\(\dfrac{2}{3}\times\dfrac{7}{2}+1=\dfrac{14}{6}+1=\dfrac{14}{6}+\dfrac{6}{6}=\dfrac{20}{6}=\dfrac{10}{3}\)
2/3 x 7/2 + 1 = 7/3 + 1 = 7/3 + 3/3 = 10/3
\(\dfrac{2}{3}\times\dfrac{7}{2}+1=\dfrac{14}{6}+1=\dfrac{14}{6}+\dfrac{6}{6}=\dfrac{20}{6}=\dfrac{10}{3}\)
2/3 x 7/2 + 1 = 7/3 + 1 = 7/3 + 3/3 = 10/3
Tính:
a) 2/3 + 52 - 3/4
b) 2/5 x 1/2 : 1/3
c) 1/2 x 1/3 + 1/4
d) 2/7 : 2/3 - 1/7
e) 7/9 x 3/14 : 5/8
g) 5/12 - 7/32 : 21/16
tính
2/9 : 2/3 x 1/2
1/2 x 1/3 + 1/4
2/7 : 2/3 - 1/7
1) 1/3 x 1/2 x 3/7 2) 5/4 x 1/3 + 1/7 3) 8 x ( 8/9-2/3 ) 4) 5/6 x 48/20 x 1/2 5) ( 2/5 + 3/4 ) x 8 6) 10 x ( 1/2-1/5 )
X x 3/7 = 2/5 3/7 : X =1/2 7/5 - X = 2/3
a ( 3/4 + 1/2 ) x 5/7 =
Tính bằng hai cách:
Cách 1 :
Cách 2 :
b) 5/7 x 13/21 + 2/7 x 13/ 21=
Tính bằng hai cách :
Cách 1 :
Cách 2 :
c) Tính 7/5 + 4/3 + 7/5 + 4/3 bằng hai cách :
Cách 1 : 7/5 + 4/3 + 7/5 + 4/3 = 7/5 x 2 + 4/3 x 2 =
Cách 2 : 7/5 + 4/3 + 7/5 + 4/3 = ( 7/5 + 4/3) x 2 =
Tính:
a) 2/3 : 1/2 + 1/3 : 1/2
b) 3/10 : 7/6 : 3/7
c) 4/9 x 7/9 : 7/5
d) (1 - 1/2) x (1 - 1/3) x (1 - 1/4) x (1 x 1/5)
Ai giải giúp đi, mình cần gấp
Tìm X:
a).X:1/2=3/4
b).X-1/2=4/5
c).X+2/3=7/5
d).X x 5/4=2/7
e).7/3-x=4/7
f).5/9:x=4/13
g).1/2+x=3/4
h).1/2-x=3/4
i).2/3x X =7/5
k).X:5/4=2/7
l).7/3-x=4/7x14/8
2NG ĐẦU ĐÙNG THÌ MK SẼ TICK NKA
Bài 1:
a) 8/7 - 5/11 : 8 b) 1 + 2/9 : 7/3 - 10/7 c) 11/3 - 2 : 7/3 + 4
Bài 2:
a) 9/4 - x = 5/11 : 1/2 b) 2/9 : x = 7/3 - 10/7
Bài 3:
\(\dfrac{1999x1998-1}{1997x1999+1998}\)
x/7 - 1/2 = 3 - 5/7
(x + 2/3) -1/5 = 7/15
a (1/2 + 3/4 ) x 4
b (5/7 - 1/4 ) x 7
c 1/2 x 3/4 +1/2 x 1/4
d 11/3 x 26/7 - 26/7 x 8/3
Giải hộ giúp mình 4 phần này huhu