=>x-96=428-x

=>2x=524

=>x=262

X - 96 =( 443 - X ) -15

X- 96 = 443 - X -15

X + X = 443-15+96

2X     = 524 

 X      = 524 : 2

 X      = 262

=257 nha bn triệu vân bb

\(x-96=\left(443-x\right)-15\)

\(x-96=443-x-15\)

\(x+x=443+96-15\)

\(2x=524\)

\(x=262\)

Cái này mình áp dụng quy tắc dấu ngoặc và quy tắc chuyển vế nhé. Vì mình cũng đang học lớp 6. :3

x - 96 = (443 - x) -15

x - 96 = 443 - x - 15

x + x = 443 - 15 + 96 

2x = 524

x= 524 : 2

x = 262

Vậy x = 262

~Học Tốt Nhé!~

 x - 96 = ( 443 - x ) - 15

x  - 96 + 15 =  443 - x 

x  - 81 = 443 - x

x  = 443 - x + 81

x  + x = 443 + 81

2x  = 524

x  = 534 : 2 

x  =267 

a) x - 96 = (443 - x) - 15

x - 96 = 443 - x - 15

x + x = 443 -15 + 96

2x = 524

x = 524 : 2

x = 262

b) (x  -12) - 15 = (20 - 7) - (18 + x)

x - 12 - 15 = 20 - 7 - 18 - x

x + x = 20 - 7 - 18 + 12 + 15

2x = 22

x = 22 : 2

x = 11

c) 311 - x + 82 = 46 + (x - 21)

311 - x + 82 = 46 + x - 21

-x - x = 46 - 21 - 311 - 81

-2x = -367

x = -367 : (-2)

x = 183,5

d) -(x - 3 + 85) = (x + 70 - 71) - 5

-x + 3 - 85 = x + 70 - 71 - 5

-x - x = 70 - 71 - 5 - 3 + 85

-2x = 76

x = 76 : (-2)

x = -38

e,f làm tương tự

a) x - 96 = (443 - x) - 15

x - 96 = 443 - x - 15

x + x = 443 -15 + 96

2x = 524

x = 524 : 2

x = 262

b) (x  -12) - 15 = (20 - 7) - (18 + x)

x - 12 - 15 = 20 - 7 - 18 - x

x + x = 20 - 7 - 18 + 12 + 15

2x = 22

x = 22 : 2

x = 11

c) 311 - x + 82 = 46 + (x - 21)

311 - x + 82 = 46 + x - 21

-x - x = 46 - 21 - 311 - 81

-2x = -367

x = -367 : (-2)

x = 183,5

d) -(x - 3 + 85) = (x + 70 - 71) - 5

-x + 3 - 85 = x + 70 - 71 - 5

-x - x = 70 - 71 - 5 - 3 + 85

-2x = 76

x = 76 : (-2)

x = -38

e,f làm tương tự

a) x - 96 = (443 - x) - 15

x - 96 = 443 - x - 15

x + x = 443 -15 + 96

2x = 524

x = 524 : 2

x = 262

b) (x  -12) - 15 = (20 - 7) - (18 + x)

x - 12 - 15 = 20 - 7 - 18 - x

x + x = 20 - 7 - 18 + 12 + 15

2x = 22

x = 22 : 2

x = 11

c) 311 - x + 82 = 46 + (x - 21)

311 - x + 82 = 46 + x - 21

-x - x = 46 - 21 - 311 - 81

-2x = -367

x = -367 : (-2)

x = 183,5

d) -(x - 3 + 85) = (x + 70 - 71) - 5

-x + 3 - 85 = x + 70 - 71 - 5

-x - x = 70 - 71 - 5 - 3 + 85

-2x = 76

x = 76 : (-2)

x = -38

e,f làm tương tự

\(x+x=x.1+x.1=x\left(1+1\right)=x.2=2x\)

ta có: x=1.x

=> x+x= 1.x +1.x

=> x+x= x.(1+1)

=> x+x= x.2=2x

Học tốt :D

\(x+x=x\cdot1+x\cdot1=x\left(1+1\right)=2x\)

<=> x - 96 = 443 - x - 15

<=> x + x  = 443 - 15 + 96

<=>   2x   = 524

<=>   x     = 524 : 2

<=>  x      = 262

\(x-96=\left(443-x\right)-15\)

\(x-96=443-x-15\)

\(x+x==443-15+96\)

           \(x.2=524\)

               \(x=524:2\)

               \(x=262\)

Tk mk nhé(nếu đúng)!Thank you!

mình chịu

a/ x-96-(443-x)-15 = ?

bằng bao nhiêu sao 0 có

`[ ( 2 xx x - 11 ) : 3 + 1 ] xx 5 = 20`

`( 2 xx x - 11 ) : 3 + 1=20:5`

`( 2 xx x - 11 ) : 3 + 1=4`

`( 2 xx x - 11 ) : 3 =4-1`

`( 2 xx x - 11 ) : 3 =3`

`2xx x -11=3xx3`

`2xx x -11=9`

`2xx x =9+11`

`2 xx x=20`

`x=20:2`

`x=10`

Vậy `x=10`

`b,  x - 96 = ( 443 - x ) - 15`

`x-96=443-x-15`

` x+x=443-15+96`

`2x=524`

`x=524:2`

`x= 262`

Vậy `x=262`

\(#Nqoc\)

`a)`

\([ ( 2 \times x - 11 ) \div 3 + 1 ] \times 5 = 20\)

`(2 \times x - 11) \div 3 + 1 = 20 \div 5`

`(2 \times x - 11) \div 3 + 1 = 4`

`(2 \times x - 11) \div 3 = 4  - 1`

`(2 \times x - 11) \div 3 = 3`

`2 \times x - 11 = 3 \times 3`

`2 \times x - 11 = 9`

`2 \times x = 9 + 11`

`2 \times x = 20`

`x = 20 \div 2`

`x = 10`

Vậy, `x = 10`

`b)`

\(x - 96 = ( 443 - x ) - 15\)

`x - 96 = 443 - x - 15`

`x - 96 = 428 - x`

`x = 428 - x + 96`

`x = 524 - x`

`x - 524 + x = 0`

`(x + x) - 524 = 0`

`2x - 524 = 0`

`2x = 524`

`x = 524 \div 2`

`x = 262`

Vậy, `x = 262.` 

a,    (x-12) -15 = (20-7) - (18+x)

<=> x - 12 - 15 = 13 - 18 - x 

<=> 2x = 22

<=> x = 11

b,     x- 96  = ( 443 - x) - 15

<=> x - 96 = 443 - x - 15

<=> 2x = 524

<=> x = 262

c,     311 - x + 82 = 46 + ( x- 21)

<=> 311 - x + 82 = 46 + x - 21

<=> 2x = 368

<=> x = 184

e,     ( - x + 821 + 534 ) = 499 + ( x-84)

<=> - x + 821 + 534 = 499 + x - 84

<=> 2x = 940

<=> x = 470

f,      x + 96 = ( 443 - x) - 447 

<=> x + 96 = 443 - x - 447

<=> 2x = - 100

<=> x = - 50

d,     - ( x - 3 + 85) = ( x + 70 - 71) -5

<=> - x + 3 - 85 = x + 70 - 71 - 5

<=> 2x = - 76

<=> x = - 38