\(\dfrac{3}{5}+\dfrac{2}{7}=\dfrac{21}{35}+\dfrac{10}{35}=\dfrac{31}{35}\)
\(\dfrac{11}{12}-\dfrac{3}{4}=\dfrac{11}{12}-\dfrac{9}{12}=\dfrac{2}{12}=\dfrac{1}{6}\)
4/7 + 3/4 + 2/7 18/7 - 2 10/12 - 12/36
5/3 - 3/5 + 6/11 3/5 x 3/7 : 5
bài 1
4/7+4
3+6/11
3-5/7
21/9-2
15/24+2
63/45-20/25
3/4-2/8
6/7-5/8
37/45-5/9
46/39-11/13
5/12+3/4+1/3
1/2+3/7+11/14
7/10-(1/5+1/4)
15/4-2/3-3/4
a) 5/7 + 4/3 + 2/7 + 5/3
b) 17/12 + 29/7 - 8/7 + 7/12
c) 2/5 + 6/9 + 7/4 + 3/5 + 1/3 + 1/4
d) 17/51 + 13/17 + 29/11 + 50/75 + 4/17 + 4/11
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=?
Bài 3 : Tính
a) 11/7 + 3/5 , 4 + 1/9 b) 21/5 - 5/8 , 2 - 11/15
c) 3/19 x 38/9 , 21/5 x 2 c) 7/3 : 4/9 , 12/7 : 3
1) Tính
a) 9/12 - 5/12 ; 9/12 - 1/3 ; 7 - 3/2 ; 9/4 - 2
b) 2/7 + 5/7 ; 1/3 + 5/12 ; 2 + 2/5 ; 6/9 + 3
c) 2/3 x 4/7 ; 3/11 x 2 ; 4 x 2/7
d) 8/21 : 4/7 ; 8/7 : 4 ; 5 : 2/3
AI LÀM NHANH VÀ ĐÚNG NHẤT THÌ MÌNH TICK CHO!!!!
Giúp mình với mình tick hết
7/6+5/12-1/18-1=? 13/6+5/18+3-7/12=?
3+11/4-1/12-3/16=? 2/5x7/4-2/5x3/4=?
a.11/12+5/6x3/2-2/3
b.4/9:4/6x3/4+5/3
c.5/7:11/14:15/22x3/5
( 5/8 + 1/4 ) x 2/3 =
5/7 x 1/3 + 4/3 =
9/11 + 1/12 : 11/24 =
A) 2/5 : 7/11 =
B) 12/17 + 4/5 =
C) 6/11 - 4/13 =
D) 5/6 + 4/7 x 2/3 =
