Question

Resolva as inequações U = R
a) 8x – 10 > 2x + 8
b) 2(3x +7) < – 4x + 8

Answer 1

Resposta:

a) 8x - 2x < 8 + 10

   6x < 18

   x < 3

b) 6x + 14 < -4x + 8

   6x + 4x > 8 - 14

    x > -0,6

Answer 2

Explicação passo-a-passo:

$8x - 10 > 2x + 8 \\ 8x - 2x > 8 + 10 \\ 6x > 18 \\ x > 3$

$2(3x + 7) < - 4x + 8 \\ 6x + 14 < - 4x + 8 \\ 6x + 4x < 8 - 14 \\ 10x < - 6 \\ x < \frac{ - 6}{10} \\ x = \frac{ - 3}{5}$