Question

Resolva as inequações:

a) 13x - 1 < 9x + 1

b) 3 ( x - 1 ) - 2x > 13

c) 8x + 19 < 10x + 11

Answer 1

a)
$13x - 9x < 1 + 1 \\ 4x < 2 \\ x < 0.5$

b) 3x - 3 - 2x > 13
x > 16

c) -2x < - 8 (x -1)
2x > 8
x > 4