![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
2/5 + 11/15 = 17/15
7/8 - 7/9 = 7/72
11/13 x 26/31 = 22/31
16/24 : 4 = 1/6
30 : 6/5 = 25
9/16 : 4 = 9/64
1/2 : 1/3 x 8/15 = 3/2 x 8/15 = 4/5
![](https://rs.olm.vn/images/avt/0.png?1311)
24/39x 26/17 - 10/27 = 16/17 - 10/27 = 262/459
2 + 8/7 : 2/5 = 2 + 20/7 = 34/7
968 x 59 +968 x 59 = 57112 + 36 = 57148
24/39x 26/17 - 10/27 =\(\dfrac{262}{459}\)
2 + 8/7 : 2/5=\(\dfrac{34}{7}\)
968 x 59 + 35 460 : 985= 57148
Số nhỏ ghia
![](https://rs.olm.vn/images/avt/0.png?1311)
( x + 1 ) + ( x + 3 ) + ( x + 7 ) + ( x + 11 ) + .......... + ( x + 31 ) + ( x + 33 ) = 306
( x + x + x + x + ......... + x + x ) + ( 1 + 3 + 7 + 11 + .......... + 31 + 33) = 306
\(\Rightarrow\) 17x + 289 = 306
17x = 306 - 289
17x = 17
x = 17 : 17
x = 1
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{3}{7}\times\dfrac{7}{9}\times\dfrac{1}{2}\)
\(=\dfrac{3\times7\times1}{7\times9\times2}\)
\(=\dfrac{21}{126}\)
\(=\dfrac{1}{6}\)
\(\dfrac{5}{8}\times4\times\dfrac{1}{2}\\ =\dfrac{5}{8}\times\dfrac{4}{1}\times\dfrac{1}{2}\\ =\dfrac{5\times4\times1}{8\times1\times2}\\ =\dfrac{20}{16}\\ =\dfrac{5}{4}\)
\(4\times\dfrac{1}{24}\times3\\ =\dfrac{4}{1}\times\dfrac{1}{24}\times\dfrac{3}{1}\\ =\dfrac{4\times1\times3}{1\times24\times1}\\ =\dfrac{12}{24}\\ =\dfrac{1}{2}\)
(x+1)+(x+3)+(x+7)+......(x+24)+(x+31)=272
=>(x+x+...+x)+(1+3+...+31)=272
=>6x+76=272
=>6x=196
=>x=... đề sai