\(\left|2x-1\right|=\left|x+1\right|\)

\(\left|\dfrac{1}{3}-4x\right|=\left|2x+\dfrac{2}{3}\right|\)

Tìm x

Cho: \(B=51.52.53....149.150\)

Tim so tu nhien n lon nhat sao cho \(B:9^{n-2017}\)

nối 1 - 5 với A-H

nối

1. On Saturday, a lot of people visit the library where Elena works and it is always..........

A. busy B. heavy C. strong

2. 'The job is ........ because I meet a lot of different people,' Elena says.

A. friendly B. interesting C. favourite

3. Her job is to ........ all the books when people bring them back.

A. look B. watch C. check

4. Elena has to put all the books back on the ........ shelf.

A. good B. possible C. right

5. Sometimes people ............ to return their books on time.

A. think B. forget C. mind

Rút gọn:

\(a,A=\dfrac{201220122012}{201320132013}\)

\(b,B=\dfrac{3.5.7.11.13.37-10101}{1212120+40404}\)