Question

Resolva as inequações:


a) 2x – 15 ˂ -x

b) 6x – 5 – 4x ≤ 3

c) - x – 10 ˃ - 2

d) 4 – 3x ˃ x + 6

e) 2x + x – 5 ˃ 19 + 5x

f)3x + 4 ˃ - 3

g) 3x + 8 ˂ 6 + 5x

h) 6x – 3(4 – 2x) ˃0


Quero cálculos, pfv!

Answer 1

a) 2x - 15 < -x

-15 < -x-2x

-15 < -3x

x < -15/-3

x < 5

b) 6x -5 -4x < 3

2x -5 < 3

2x < 3+5

2x< 8

x < 4

c) -x -10 > -2

-x > -2 + 10

-x > 8

d) 4-3x > x+6

3x-x > 6-4

2x > 4

x > 2

e) 2x + x – 5 ˃ 19 + 5x

3x - 5 > 19 + 5x

3x - 5x > 19 + 5

-2x > 24

-x > 12

f)3x + 4 ˃ - 3

3x > -3-4

3x > -7

x > -7/3

g) 3x + 8 ˂ 6 + 5x

8 - 6 < 5x - 3x

2 < 2x

1 < x

h) 6x – 3(4 – 2x) ˃0

4x > 12

x > 3