Question

Resolva as inequações abaixo:
a) 5x – 10 > 10 + x
b) x + 4 ≤ 2x – 1 f) 8(x – 3) > 0
c) x + 1 ≥ 0 g) 2x – 18 > 4x – 38
d) 4(x – 1) < 2x + 6
e) 5(3 + x) ≤ 3(2x + 4)

Answer 1

Resposta:

a) 5x – 10 > 10 + x

5x - x > 10 + 10

4x > 20

x > 20/4

x > 5

b) x + 4 ≤ 2x – 1

x - 2x ≤ - 1 - 4

-x ≤ -5

x ≥ 5

c) x + 1 ≥ 0

x ≥ -1

d) 4(x – 1) < 2x + 6

4x - 4 < 2x + 6

4x - 2x < 6 + 4

2x < 10

x < 10/2

x < 5

e) 5(3 + x) ≤ 3(2x + 4)

15 + 5x ≤ 6x + 12

5x - 6x ≤ 12 - 15

-x ≤ -3

x ≥ 3

f) 8(x – 3) > 0

8x - 24 > 0

8x > 24

x > 24/8

x > 3

g) 2x – 18 > 4x – 38

2x - 4x > -38 + 18

-2x > -20

2x < 20

x < 20/2

x < 10

Espero ter ajudado!!! <3

Bons estudos!!! :D

Qualquer dúvida é só falar ^^