a. 3/5 + x = 5/7
x = 5/7 - 3/5
x = 4/35
b. x x 4/11= 1/3
x = 1/3 : 4/11
x = 11/12
3/5+x=5/7
x= 5/7 - 3/5
x= 4/35
X x 4/11= 1/3
X = 1/3 : 4/11
X = 11/12
( 1/2 x 2/3 x 3/4 x 4/5 ) : x = 1 x2 x3 x4 / 5 x 6 x7 x8
các bạn làm nhanh giùm mk nhé ! Mình cần gấp.
3/4 x ( 5/6 + 7/8)
B)1/11 : (6/7 - 5/6) - 20/11
D) (4 - 2/7 x3) : 1/3
Bài 1 : Tính bằng hai cách
a) ( 6/11 + 5/11 ) x 3/7 =
b) 3/5 x 7/9 - 3/5 x 2/9 =
c) ( 6/7 - 4/7 ) : 2/5 =
d) 8/15 : 2/11 + 7/15 : 2/11 =
Bài 2 : Tính
a) 2 x 3 x4/3 x 4 x 5 =
b) 2/3 x 3/4 x 4/5 : 1/5 =
c) 1 x 2 x 3 x 4 / 5 x 6 x 7 x8 =
d) 2/5 x 3/4 x 5/6 : 3/4 =
bai 1 : tinh bang hai cach
a) 3/22 x3/11 x22 =??
b)( 1/2 + 1/3 ) x2/5 =???
c)
3/5 x 17/21 + 17/21 x 2/5 =???
tìm x
(x+7\4) x3\2=6
x:5\3+2\5=9\5
1\2:3+x=5\3
Tìm x
x - 4/5 = 3/7
x + 3/7 = 4/5
19/20 - x = 8/5 - 3/4
4/5 x X = 6/9 - 4/7
x : 7/9 = 6/8
2/3 - x/6 = 6/18
Tìm x
x - 4/5 = 3/7
x + 3/7 = 4/5
19/20 - x = 8/5 - 3/4
4/5 x X = 6/9 - 4/7
x : 7/9 = 6/8
2/3 - x/6 = 6/18
tìm x
a.35/28-x=5/14 b.6/7x X= 2/3
C.X x 7=3/4 D.2: x -1/3=2/5
Bài 1: Tính
a) 1/3 + 1/5 - 1/4 b) 7/8 - ( 1/4 + 2/5 ) c) 5/11 - ( 3/5 - 6/11 )
Bài 2: Tìm x
a) x + 2/5 = 1/2 b) x + 3/7 = 2/5 + 3/10 c) 19/20 - x = 8/5 - 3/4
Bài 3: Tìm số tự nhiên x, biết:
a ) 4/7 < x < 1/2 + 10/3 b) 3/10 + 8/5 < x < 2/5 + 5
Giúp mình nha ^^ Ai nhanh mình Tick !!!!!!!!!❤❤
