Question

 

 

 

Answer 1

a, x - 4  = -20

    x  = -20 + 4

   x = -16

b, -6x + 7 = 13

  -6x = 13 - 7

-6x = 6

x = -1

c; x + 16 = 5

x = 5 - 16

x = -11

d, 3(x-1) =9

    x - 1 = 3

    x = 4

 

Answer 2

`a, x-4=-20`

`=>x=-20+4`

`=>x=-16`

`b, -6x +7=13`

`=>-6x=13-7`

`=>-6x=6`

`=>x=6:(-6)`

`=>x=-1`

`c,x+16=5`

`=>x=5-16`

`=>x=-11`

`d, 3(x-1)=-9`

`=>x-1=-9:3`

`=>x-1=-3`

`=>x=-3+1`

`=>x=-2`

`#`\(Min\)

Answer 3

a) x-4=-20
    x    = -20+4
    x   = -16
b)   -6x+7=13
       -6x   = 13-7
          x   = 6:(-6)
         xx  = -1
c) x+16=5
    x     = 5-16 = -11
d) 3.(x-1)=-9
       x-1=-9:3
       x-1=-3+1
        x   = -2