Verified answer

Resposta:

a)  5x +2 = 3x

    5x - 3x = - 2

    2x = - 2

    x =  -2/2

 x - 1

b ) 10x+14 = 5x - 36          

    10x - 5x = -14 - 36

    5x = -50

     x = -50/5

      x = -10

c) 27x+35= -13x+20

   27x + 13x = -35 + 20

   40x = - 15

   x = -15/0

        x = - ( 3/8)

d) (5x+3).2+4x=6x-15

    2(5x + 3) + 4x.10 = 6x.10 - 15 x10

   2(5x + 3 ) + 40x = 60x - 150

   10x + 6 + 40x = 60x - 150

   50x + 6 = 60 x - 150

   50x - 60x = - 6 - 150

    - 10x = - 156

    x =  -150/-10

    x = 78/5

e) 14x+7.(2x)= 8x+3 (2x-7)​

    14x + 14x = 8x + 6x - 21

     28x = 14x - 21

     28x - 14x = -21

     14x = - 21

     x =  -21 / 14

     x =  - ( 3/2 )