g: x:(-7)-6=-15

=>x:(-7)=-15+6=-9

=>\(x=\left(-9\right)\left(-7\right)=9\cdot7=63\)

h: \(x:12+\left(-12\right)=-37\)

=>\(x:12=\left(-37\right)-\left(-12\right)=-37+12=-25\)

=>\(x=-25\cdot12=-300\)

i: \(x:\left(-25\right)+81=85\)

=>\(x:\left(-25\right)=85-81=4\)

=>\(x=4\cdot\left(-25\right)=-100\)

k: \(\left(-31\right)\cdot x=-93\)

=>\(x=\dfrac{-93}{-31}=\dfrac{93}{31}\)

=>x=3

l: 5x+1=-4

=>5x=-4-1=-5

=>\(x=-\dfrac{5}{5}=-1\)

m: \(\left(-12\right)\cdot x+34=10\)

=>\(\left(-12\right)\cdot x=10-34=-24\)

=>12x=24

=>x=24/12=2

9 – 25 = (7-x) – (25 + 7)

9 + (-25) = 7 – x – 25 – 7

-16 = 7 – x – 25 – 7

X = 7 – 7 – 25 + 16

x = -25 + 16

x = -9

(7-x)-32=-16

7-x=-16+32

7-x=16

x=7-16

x=-9

 9 -25 = (7-x) - ( 25 +7)

 - 16 = 7 -x - 32

x = 7 -32 +16 

x =7 -16

x = - 9

a,11-(15+21)=x-(25-9)

      11-15-21=x-25+9

               -x=-25+9-11+15+21

               -x=9

                x=-9

b,9-25=(7-x)-(25+7)

    -16=7-x-32

      x=7-32+16

     x=-9

9-25            =(7-x)-(25+7)

(7-x)-(25+7)=9-25

x               =7-9-25-7+25

x               =-9

9 - 25 = (7 - x) - ( 25 + 7)

-16 = 7 - x - 32

-16 = -25 - x 

x = -25 - (-16)

x = -25 + 16

x = -9

Giải

                          9 – 25 = ( 7 – x ) – ( 25+7)

                      9 +( -25) = 7 – x – 25 – 7

                               -16 = 7 – x – 25 – 7

                                  x = 7 – 7 – 25 +16

                                  x = - 25 + 16

                                  x = -9 

a)2-x=17-(-5)

2-x=17+5

2-x=22

x=2-20

x=-20

b)x-12=-9-15

x-12=-24

x=(-24)+12

x=-12

c)11-(15+11)=x-(25-9)

11-26=x-16

-15=x-16

x=-15+16

x=1

d)x-25=(7-x)-(25+7)

x-25=(7-x)-32

2x-25=7-32

2x-25=-25

2x=(-25)+25

2x=0

x=0:2

x=0

tick cho mk nha bạn

a)2-x=17-(-5)

2-x=17+5

2-x=22

x=2-20

x=-20

b)x-12=-9-15

x-12=-24

x=(-24)+12

x=-12

c)11-(15+11)=x-(25-9)

11-26=x-16

-15=x-16

x=-15+16

x=1

d)x-25=(7-x)-(25+7)

x-25=(7-x)-32

2x-25=7-32

2x-25=-25

2x=(-25)+25

2x=0

x=0:2

x=0

a)2-x=17-(-5)

2-x=17+5

2-x=22

x=2-20

x=-20

b)x-12=-9-15

x-12=-24

x=(-24)+12

x=-12

c)11-(15+11)=x-(25-9)

11-26=x-16

-15=x-16

x=-15+16

x=1

d)x-25=(7-x)-(25+7)

x-25=(7-x)-32

2x-25=7-32

2x-25=-25

2x=(-25)+25

2x=0

x=0:2

x=0

a, 11 - ( 15 + 11 ) = x - ( 25 - 9 )

11-15-11=x-25+9

-15=x-16

x=1

b, 2 - x = 17 - ( - 5 )

2-x=22

x=-20

c, x - 12 = ( - 9 ) - 15

x-12=-24

x=-12

d, 9 - 25 = ( 7 - x ) - ( 25 + 7 )

(7-x)-32=-16

7-x=16

x=-9

#H

9 - 25 = ( 7 - x ) - ( 25 + 7 )

-16=7-x-25-7

-16=-39-x

=> -39-x=-16

=>      -x=(-16)+39

=>      -x=     23

=>       x=     -23.

Vậy x=-23.

K cho mình nhé, cảm ơn.

9 - 25 = -16

-->-16 = (7 - x ) - ( 25 + 7 )

16 = ( 7 - x) - 32

7 - x = 16 + 32 =48

--> 48 = 7 - x

x = 7 - 48 = -41

đáp số : -41