Question

Resolva as inequaçoes

Answer 1

Resposta:

a) x > 3; b) x < 5; c) x ≤ - 1; d) x < - 6; e) a > 100.

Explicação passo a passo:

a) 8x - 10 > 2x + 8

8x - 2x > 8 + 10

6x > 18

x > 18/6

x > 3.

b) 6x - 30 < 0

6x < 30

x < 30/6

x < 5.

c) 3x + 5 ≤ 2x + 4

3x - 2x ≤ 4 - 5

x ≤ - 1.

d) 3x + 9 < 4x + 15

3x - 4x < 15 - 9

- x < 6 .(-1)

x < - 6.

e) - 5a + 500 > 300 - 3a

- 5a + 3a > 300 - 500

- 2a > - 200 .(-1)

2a > 200

a > 200/2

a > 100.