He greets me in a friendly way.

Câu hỏi là gì vậy bạn?

1 < |x – 2|< 4

\(\Rightarrow\)|x – 2|\(\in\){ 2 ; 3 }

\(\Rightarrow\)x – 2 \(\in\){ -3 ; -2 ; 2 ; 3 }

Ta có bảng giá trị :

\(\Rightarrow\)x \(\in\){ -1 ; 0 ; 4 ; 5 }

Vậy x \(\in\){ -1 ; 0 ; 4 ; 5 }

The programme I like most is One vesus one hundred.

35

a) 461 + (x – 45) = 387

x – 45 = 387 – 461

x – 45 = -74

x = -74 + 45

x = -29

Vậy x = -29

b) 11 – (-53 + x) = 97

-53 + x = 11 – 97

-53 + x = -86

x = -86 – (-53)

x = -33

Vậy x = -33

c) -(x + 84) + 213 = -16

-(x + 84) = -16 – 213

-(x + 84) = -229

-x – 84 = -229

-x = -229 + 84

-x = -145

\(\Rightarrow\)x = 145

Vậy x = 145

Tick cho mình nhé!!!

a) -2003+(-21+75+2003)

= -2003-21+75+2003

= (-2003+2003)+(-21+75)

= 0+54

= 54

b) 1152-(374+1152)+(-65+374)

= 1152-374-1152-65-374

= (1152-1152)-(374-374)-65

= 0-0-65

= -65

Let him do it himshelf.

What is your name ? I'm Duong

Em cảm ơn thầy ạ