Question

Determine o conjunto solução de cada equaçao, considerando U = Z

a) 2x + 7= 11


B) 5x - 45= -5


C) 3 . (x-2) = 12


D) 5 . (4 - x) = 75


E) 5x + 6 = 3x - 18


F) 2 . (x-1) +3x = 4x - 1


G) 5 . (x - 4) + 6 = 2 + x


H) 4 . (x-2) + 14x = 8 . (2x - 3)

Answer 1

Resposta:

Explicação passo-a-passo:

a) 2x = 11 - 7

2x = 4  

x= 2

b) 5x = -5 + 45

5x = 40

x = 8

c)x - 2 = 4

x = 4 + 2

x = 6

d)4 - x = 15

-x = 15 - 4

-x = 11

x = -11

e)5x - 3x = -18 - 6

2x = -24

x = -12

f)2x - 2 + 3x = 4x - 1

5x - 2 = 4x - 1

5x -  2 = 4x - 1

5x - 4x = -1 + 2

x = 1

g)5x -20 + 6 = 2 + x

5x - 14 = 2 + x

5x - x = 2 + 14

4x = 16

x = 4

h)4x - 8 + 14x = 16x - 24

18x - 8 = 16x -24

18x - 16x = -24 + 8

2x = -16

x = -8