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

a)128-3(x+4)=23 

    125.(x+4)=23

             ( x +4)=23 : 125

             x+4 = 0,184

                x = 0,184 -4

                  x = -3 .816

theo mềnh nhóe ( làm từng câu )

c: =>12x-64=32

=>12x=96

hay x=8

g: =>3x-16=14

hay x=10

e: =>5(x+4)=85

=>x+4=17

hay x=13

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

a) x-(-25+x)=13-x

⇒ x+25-x=13-x

⇒ 13-x=25

⇒ x= -12

b) 15-(30+x)=x-(27-l-8l)

⇒ 15-30-x=x-(27-8)

⇒ -15-x=x-19

⇒ -x-x=-19+15

⇒ -2x+4=0

⇒ -2x=-4

⇒ x=2

c) (12x-4³).8³=4.8⁴

⇒ 12x.8³-4³.8³=4.8⁴

⇒ 6144x-32768=16384

⇒ 6144x=49152

⇒ x=8

a: Ta có: \(x-\left(-25+x\right)=13-x\)

\(\Leftrightarrow13-x=25\)

hay x=-12

b: Ta có: \(15-\left(30+x\right)=x-\left(27-\left|-8\right|\right)\)

\(\Leftrightarrow-15-x=x-19\)

\(\Leftrightarrow-2x=-4\)

hay x=2

c: Ta có: \(\left(12x-4^3\right)\cdot8^3=4\cdot8^4\)

\(\Leftrightarrow\left(12x-64\right)\cdot512=16384\)

\(\Leftrightarrow12x-64=32\)

hay x=8

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

a,(6400+2600)-3x=1200

9000-3x=1200

3x=9000-1200

3x=7800

x=7800:3

x=2600

b,(4x-[(8000-3567)-(2031-1598)]=400

(4x-[4433-433]=400

4x-4000=400

4x=400+4000

4x=4400

x=4400:4

x=1100

C;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

a. (6400+2600) -3x=1200

=> 9000-3x=1200

=> 3x=9000-1200

=> 3x=7800

=> x=7800:3

=> x=2600

b. {4x-[(8000-3567)-(2031-1598)]}=400

=> { 4x-(4433-433)}=400

=> 4x-4000=400

=> 4x=400+4000

=> 4x=4400

=> x=4400:4

=> x=1100

c. 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

a :2600

b:1100

c:23

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 #