Question

URGENTE!!!
1) Calcule a raiz ou solução das seguintes equações, sendo U = Q:
a) X + 5 = 8
e) 10x - 19 = 21
b) 3x = 15
1) 2x - 7 = -10
c) 4x=-12
g) 6x = 2x + 16
d) 3x + 5 8
h) 2x - 5 = x + 1​

Answer 1

Resposta:

A) x + 5 = 8

   x = 8 - 5

  x = 3

================================================================

B) 3x = 15

     x = 15/3

     x = 5

================================================================

C) 4x = -12

     x = -12/4

     x = -3

================================================================

D) 3x + 5 = 8

   3x = 8 - 3

   3x = 3

     x = 3/3

     x = 1

================================================================

E) 10x - 19 = 21

   10x = 21 + 19

   10x = 40

      x = 40/10

      x = 4

================================================================

F) 2x - 7 = -10

   2x = -10 + 7

   2x = -3

     x = -3/2

================================================================

G) 6x = 2x + 16

   6x - 2x = 16

   4x = 16

     x = 16/4

     x = 4

================================================================

H) 2x - 5 = x + 1

   2x - x = 1 + 5

     x = 6