Question

Resolva as inequações a seguir: a) 2x−5<−x
b) 6 x−5−4 x≥3
c) 6 x+x−5>19+5 x

Answer 1

2x - 5 < -x

2x + x < 5

3x < 5

x < 5/3

6x -5 -4x ≥ 3

2x ≥ 5 +3

2x ≥ 8

x ≥ 8/2

x ≥ 4

6x + x -5 > 19 +5x

7x -5x > 19 + 5

2x > 24

x > 24/2

x > 12