Số cần tìm là:
9+8+15/7=134/15
Đáp số:134/15
số phải tìm là
9+8+15/7=134/15
đáp số:134/15
Các số sau: −7; 0;−5;8;−25; 9;−15;12 sắp xếp theo thứ tự giảm dần là
A.
12;9; 8; 0;−5;−7;−15; −25
B.
12;−15;−25; 9; 8;−7;−5; 0
C.
0;−5;−7; 9; 12;−15; −25
D.
0;−7; 9; 12;−15;−25
-2/9+8/15+5/3-7/9+7/15
8. \(\dfrac{-5}{9}\) + \(\dfrac{8}{15}\) + \(\dfrac{-2}{11}\) + \(\dfrac{4}{-9}\) + \(\dfrac{7}{15}\)
9. \(\dfrac{2}{7}\) + (\(\dfrac{-2}{5}\) + \(\dfrac{5}{7}\))
10. \(\dfrac{7}{19}\). \(\dfrac{8}{11}\) + \(\dfrac{3}{11}\).\(\dfrac{7}{19}\)+\(\dfrac{-12}{19}\)
11. \(\dfrac{-5}{7}\).\(\dfrac{2}{11}\) + \(\dfrac{-5}{7}\).\(\dfrac{9}{11}\)
12. \(\dfrac{-5}{13}\) + \(\dfrac{5}{7}\) + \(\dfrac{20}{41}\) + \(\dfrac{-8}{13}\) + \(\dfrac{21}{41}\)
Giúp tớ với ạ! Tớ cảm ơn! Các cậu chỉ cần ghi đáp án cuối cùng thôi ạ! Cảm ơn các cậu<3
-2/9+8/15+1 2/3-7/9+-7/-15
1/8 + 2/5 - 4/32
-1/15 + 23/27 + -14/15 + 31/27
3/7 . 22/21 + 3/7 . 5/21 + 15/21 . 3/7
-8/9 : 2/3 +1/9 : -2/3
1. Tính
a, 11/15 + - 7/10 + 13/30
b, 7/9 + -1/4 + 3/5
c, -5/21 + -5/14 + 4/35
d, 2/7 + 1/9 + 1/7 + 5/9 + 8/14
e, -4/9 + 8/15 + -2/11 + 5/-9 + 7/15
a. -7 – 9 =
b. -15 – 8 =
c. -28 – 32 =
d. -43 – 32 =
e. – 5 – 9 – 11 =
f. – 6 – 8 – 13 =
g. – 3 – 7 – 25 =
h. – 7 – 4 – 15 =
\(\dfrac{-2}{9}+\dfrac{8}{15}+1\dfrac{2}{3}-\dfrac{7}{9}+\dfrac{-7}{15}\)
-5/9 + 7/15 - 4/9 + 3/12 + 8/15
7/9-7/13-7/15-7/8
5/9-5/13-5/151-5/8
