a)

=>9x+1=937=>9x=936=>x=104

b)

=>199-(x-6)=24.2448=>-(x-6)=58752-199=>-x+6=58553=>-x=58547=>x=-58547

2448:[119-[x-6]]=24

<=> 199 - ( x-6 ) = 2448 : 24 = 102

<=> x - 6 = 199 - 102 = 97

<=> x = 97 +6 = 103

2448:[119-(x-6)]=24

119-(x-6)= 2448 : 24

119-(x-6)= 102

x-6= 119-102

x-6= 17

x=17+6

x=23

2448:[119-[x-6]]=24

        [119-(x-6)]=2448:24

        [119-(x-6)=102

                 x-6=119-102

                 x-6=17

                    x=17+6

                    x=23

119 - (x - 6) = 2448 : 24=102

x-6= 119 - 102=17

x = 17 + 6=23

119 - ( x - 6 ) = 2448 : 24 = 102

x - 6 = 119 - 102 = 17

x = 17 + 6 = 23

k cho minh nha NGUYEN LINH DAN ! cam on ban

2448 : [ 119 - ( x - 6 ) ] = 24

119 - ( x - 6 ) = 102

x - 6 = 17

x = 23

\(2448:\left[119-\left(x-6\right)\right]=24\)

\(119-\left(x-6\right)=2448:24\)

\(119-x+6=102\)

\(125-x=102\)

\(x=125-102\)

\(x=23\)

\(2448:\left[119-\left(x-6\right)\right]=24\)

\(\Rightarrow119-\left(x-6\right)=2448:24\)

\(\Rightarrow119-\left(x-6\right)=102\)

\(\Rightarrow x-6=119-102\)

\(\Rightarrow x-6=17\)

\(\Rightarrow x=17+6\)

\(\Rightarrow x=23\)

Học tốt # 

a, x=23

b, x=54

a, = 23 

b, = 54

nha bạn

trả lời đầy đủ hơn được ạ

a,

7x – 8 = 713

7x = 713 + 8

7x = 721

x = 721 : 7

x = 103.

b,

2448:[119-(x-6)]=24

119-(x-6)= 2448 : 24

119-(x-6)= 102

x-6= 119-102

x-6= 17

x=17+6

x=23

c,

2016 - 100.( x +11 ) = 2^7 : 2^3
2016 - 100.(x+11) = 2^4
2016 - 100.(x+11)=16
100.(x+11) = 2016-16
100.(x+11)=2000
x+11=2000:100
x+11=20
x = 20-11
x = 9

a) (x+12)-20=0

x+12=20

x=8

b) 5.(x-7)=0

x-7=0

x=7

c) 12x-3x+1=937

12x-3x=936

9x=936

x=104

d) 2448 : [ 119 - ( x - 6 ) ] = 24

119-(x-6) = 102

x-6=17

x=23

a ) ( x + 12 ) - 20 = 0

x + 12 = 0 + 20

x +12 = 20

x = 20 - 12

x = 8

b ) 5 . ( x - 7 ) =0

x - 7 = 0 : 5

x - 7 = 0

x = 0 + 7

x = 7

a) => x+12=0+20=20

=> x=20-12=8

b) =>x-7=0:5=0

=>x=0+7=7

c) => 15x+1=937

=>15x=937-1=936

=> x= 936:15=62,4

d) => 119-(x-6)=2448:24=102

=>x-6=119-102=17

=>x=17+6=23

Chọn mình nha . cảm ơn!!!! chúc bạn học tốt nha

Câu b,

= 50x + (1 + 3 + 5 + ..... + 99) = 2550

= 50x + 2500 = 2550

= 50x = 2550 - 2500

= 50x = 50

= x = 50 : 50

= x = 1

refer

A) 2448:[119-[x-6]]=24

<=> 199 - ( x-6 ) = 2448 : 24 = 102

<=> x - 6 = 199 - 102 = 97

<=> x = 97 +6 = 103

B) (x+1)+(x+3)+(x+5)+......+(x+99) = 2550

(x+x+x+....+x)+(1+3+5+....+99) = 2550

50x + 2500 = 2550

50x = 2550 - 2500

50x = 50

x = 50 : 50

x = 1