Question

Me pueden ayudar porfavor
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Answer 1

Respuesta:

a) X = 5

b) X = 0.66

c) X = 10

d) X = -2

e) X = 3

f) X = 28

g) X = 3

h) X = -5

i) X = -1.22

j) X = 0.42

Explicación paso a paso:

a) 4x - 12 = 8

   4x = 8 + 12

   4x = 20

     x = 20/4

     x = 5

b) 5x + 3 = 8x + 1

   3 - 1 = 8x - 5x

   2 = 3x

   x= 0.66

c) 6x - 9 = 3x + 21

   6x - 3x = 21 + 9

   3x = 30

   x = 30/3

   x = 10

d) 9x + 12 = x - 4

   9x - x = -4 - 12

   8x = -16

   x = -16/8

   x = -2

e) 6x = 18

    x = 18/6

    x = 3

f) x -20 = 8

  x= 8 + 20

  x = 28

g) 4x - 2 = 10

   4x = 10 + 2

   4x = 12

   x = 12/4

   x = 3

h) 6x - 10 = 2x - 30

   6x - 2x = -30 + 10

   4x = -20

   x = -20/4

   x = -5

i) 2x - 4 = 11x + 7

-4 - 7 = 11x - 2x

-11 = 9x

-11/9 = x

x = - 1.22

j) 6x + 4 = 1 - x

6x + x = 1 - 4

7x = -3

x = -3/7

x = 0.42