1 : 2/7 +17/6
Mn giúp mk với. Mk đg cần gấp .
K
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LT
4
HV
17 tháng 8 2017
x/2-x/6-17/3=12-5
3x/6-x/6-17/3=7
2x/6-17/3=7
2x/6=7+17/3
2x/6=38/3
x/3=38/3
=>x=38
vậy x=38
2x là 2 nhân x nhe
k mk nha
31 tháng 3 2022
y . 17 + y . 21 = 532
y.(17+21)=532
y.38=532
y=532:38=14
17 tháng 4 2018
https://drive.google.com/file/d/1R5VdsYBYabA5aJkDJPj4wdWKgzLMaWoi/view?usp=drivesdk
17 tháng 4 2018
Có \(\frac{\frac{2}{7}+\frac{2}{5}+\frac{2}{17}-\frac{2}{239}}{\frac{3}{239}-\frac{3}{7}-\frac{3}{5}-\frac{3}{17}}\) : \(\frac{x}{3}\) = 2
\(\frac{2.\left(\frac{1}{7}+\frac{1}{5}+\frac{1}{17}-\frac{1}{239}\right)}{-3.\left(\frac{-1}{239}+\frac{1}{7}+\frac{1}{5}+\frac{1}{17}\right)}\) : \(\frac{x}{3}\) = 2
\(\frac{-2}{3}\) : \(\frac{x}{3}\) = 2
\(\frac{-2}{3}\) . \(\frac{3}{x}\) = 2
\(\frac{-2}{x}\) = 2
\(\Rightarrow\) x = -1
Vậy x = -1
Chúc bạn học tốt !!! ^^ #Mango
CN
(2,7x-1 1/2x):2/7= -21/4
Các bn tính giúp mk với mk cần nó gấp
Ai nhanh và đg mk sẽ tick nha
Cảm ơn!!!!
0
22 tháng 7 2021
1. Nowadays, many children are used to connecting the Internet everyday.
2. I couldn't keep in touch with him before because I had lost his phone number.
3. They have been working for this company for thirty years and they will retire next year.
4. We were delighted to receive your letter yesterday.
5. When we saw them, they were trying to find a new house near their workplace.
22 tháng 7 2021
1 turned it down
2 worn out
3 call off
4 turn up
5 came across
6 carried out
7 broken into
8 gave up
9 took - off
10 set up
BV
1
DT
Đỗ Thanh Hải
CTVVIP
22 tháng 7 2021
1 is he leaving - will be playing
2 are training
3 were you doing - called
4 had finished - went
5 don't really expect - smells
6 do you feel - think
8 have you been doing
9 got - had begun
\(1\div\frac{2}{7}+\frac{17}{6}\)
\(=1\times\frac{7}{2}+\frac{17}{6}\)
\(=\frac{7}{2}+\frac{17}{6}\)
\(=\frac{21}{6}+\frac{17}{6}\)
\(=\frac{21+17}{6}\)
\(=\frac{38}{6}\)
\(=\frac{19}{3}\)