4 + 3 = 7 = 5 + 2 = 7 = 6 + 1 = 7 = 7 + 0 = 7
k cho mình nha!
4 + 3 = 7 = 3 + 4 = 7.1 = 7/1 = 5 + 2 =....v...v
2/7 : 1/4 - 1/7
7/11 x 0 + 5/9 : 1/2
( 3/7 + 1/4 ) : 3/4
4/3 x 1/2 + 7/2 : 1/4
a.x/3-5/4=7/12
b.3/7*5/4-3/7*3/4+3/7
Tính hợp lý:
C = 3/7 × 5/9 + 4/9 × 3/7 - 3/7
D= 8 và 2 phần 7 - ( 3 và 4 phần 9 + 4 và 2 phần 7)
Ghi cả lời nhw
1+1+1+1+2+2+2+3+3+3+3+4+4+4+4+5+5+5+5+6+6+6+6+7+7+7+7+8+8+8+8+9+9+9+9+10=
a, 3/5 + 14/7+ 4/10 b,1/7 + 2/7 + 3/7 + 4/7 + 5/7 + 6/7 help me please
tính nhanh
a, 4/7 x 5/7 + 3/7 x 5/6
b, 5/9 x 1/4 + 4/9 x 3/12
c, 7/9 x 8/5 - 7/9 x 3/5
d, 2006/2005 x 3/4 - 3/4 x 1/2005
9 1/4+6 2/7+7 3/5+8 2/3 +1/3+5/7=3/4
c) 6 1/7 + 1/7 + 1/7 + 7 1/7 d) 12 1/3 : 1/4 + 3 2/3 : 1/4 e) (1 + 1/2 ) × (1 + 1/3 ) × (1 + 1/4 ) × … × (1 + 1/2020 ) f) 1 1/2 × 1 1/3 × 1 1/4 × 1 1/5 × … × 1 1/2021
Tính
a) 4/3*7 + 4/7*11 + 4/11*15 + 4/15*19 + 4/19*23 + 4/23*27
b) 1/2*3 + 1/3*4 + 1/4*5 + 1/5*6 +1/6*7
c) 2/3*5 + 2/5*7 + 2/7*9 + 2/9*11 + 2/11*13 + 2/1*2 + 2/2*3 + 2/3*4 + 2/8*9 + 2/9*10
1. 4 1/7 - x = 2 5/9
2. 3 × x = 12,18
3. 4 1/2 × x = 5
4. 3/4 × x = 1
5. 4/5 : x = 3
6. 12/x = 4
7. 4/7 : x = 4/7
8. 2x - 3/4 = 7/8
P/s : Giúp mk nha mấy bạn 😘😘
