Anh ấy thật ấm áp khi giúp đỡ người khác như thế

a) x+2011=1

<=> x=-2010

tổng tất cả các số là: 11825

 'Our school Sports Day will be next 'Saturday. 'Everyone in my class is 'going to take part in it. Mai and Linda are 'going to play 'table 'tennis. 'Tony's going to play 'basketball and 'Peter's going to play 'badminton. Phong and Nam are going to play in a 'football match. Tom's going to swim. My 'classmates are 'practising hard for the e'vents. We hope that we will win the compe'titions.  

bạn đưa hình vẽ đi ạ

|x+2/5| = 1/2

Xét hai trường hợp:

Trường hợp 1:

\(x+\dfrac{2}{5}=\dfrac{-1}{2}\) và \(x+\dfrac{2}{5}=\dfrac{1}{2}\)

<=> \(x=\dfrac{-1}{2}-\dfrac{2}{5}=\dfrac{-9}{10}\) và \(x=\dfrac{1}{2}-\dfrac{2}{5}=\dfrac{1}{10}\)