![](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)
=>\(\left(\frac{9}{20}+\frac{9}{30}+\frac{9}{4}+111\right)+\frac{9}{2}\left(x+1\right)=\frac{3}{2}\)
=>\(114+\frac{9}{2}\left(x+1\right)=\frac{3}{2}\)
=>\(\frac{9}{2}\left(x+1\right)=\frac{-111}{2}\)
=>x+1=\(-\frac{37}{3}\)
=>x=\(-\frac{40}{3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
BT1 :thực hành phép tính
4/3+-11/31+3/10-20/31-2/5 = 7/30
7/12-1/-16+3/4 = 67/48
2/11.-5/4+-9/11.5/4+ 1 và 3/4 = -1/4 * và 3/4 là sao bạn *
-9/27-25/75 = -2/3
![](https://rs.olm.vn/images/avt/0.png?1311)
kết quả = 99999999999999999999
k mk nha pạn
mk nhanh nhất
cảm ơn trước
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài 2:
a: 5/7-3/7x=1
=>3/7x=-2/7
hay x=-2/3
b: \(x+\dfrac{2}{3}=\dfrac{-1}{12}\cdot\dfrac{-4}{5}=\dfrac{1}{15}\)
=>x=1/15-2/3=-9/15=-3/5
c: \(x-4=\dfrac{-14}{35}:\dfrac{7}{5}=\dfrac{-14}{35}\cdot\dfrac{5}{7}=\dfrac{-70}{245}=\dfrac{-2}{7}\)
=>x=4-2/7=26/7
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(x+16⋮x+1\Leftrightarrow x+1+15⋮x+1\)
mà \(\Leftrightarrow x+1⋮x+1\Rightarrow15⋮x+1\Rightarrow x+1\inƯ\left(15\right)=\left\{\pm1;\pm3;\pm5;\pm15\right\}\Rightarrow x\in\left\{-16;-6;-4;-2;0;2;4;14\right\}\)
b)
a) \(x+11⋮x+1\Leftrightarrow x+1+10⋮x+1\)
mà \(\Leftrightarrow x+1⋮x+1\Rightarrow10⋮x+1\Rightarrow x+1\inƯ\left(10\right)=\left\{\pm1;\pm2;\pm5;\pm10\right\}\Rightarrow x\in\left\{-11;-6;-3;-2;0;1;4;9\right\}\)
1) \(\Rightarrow\left(x+1\right)+15⋮\left(x+1\right)\)
\(\Rightarrow\left(x+1\right)\inƯ\left(15\right)=\left\{-15;-5;-3;-1;1;3;5;15\right\}\)
\(\Rightarrow x\in\left\{-16;-6;-4;-2;0;2;4;14\right\}\)
2) \(\Rightarrow\left(x+1\right)+10⋮\left(x+1\right)\)
\(\Rightarrow\left(x+1\right)\inƯ\left(10\right)=\left\{-10;-5;-2;-1;1;2;5;10\right\}\)
\(\Rightarrow x\in\left\{-11;-5;-3;-2;0;1;4;9\right\}\)
![](https://rs.olm.vn/images/avt/0.png?1311)